1. Introduction
In past several decades, numerous studies have investigated the relationship between companies and users through the Internet [
1,
2,
3]. This relationship, based on user-brand interaction on social networks, is a starting point for the study of the relationship between companies and their customers in digital environments [
4]. The content generated by users on the Internet, termed as user-generated content (UGC), has been extensively used by researchers to extract insights and to discover knowledge about digital environments [
5]. It is also well known that users use social networks to interact with brands [
6].
This digital environment has been consolidated as a new channel for bidirectional communication between brands and their customers [
7]. In addition, this online interaction offers many opportunities to obtain data about users’ behavior online and to better understand how it can be used by companies to improve their relationship with customers as well as to increase the engagement [
8].
In this respect, numerous previous studies have focused on the Black Friday event and analyzed user behavior and companies’ marketing strategies [
9,
10,
11]. On Black Friday event, the world’s leading technology companies offer discounts and special promotions to their customers in order to increase sales and enhance their brand value [
6,
12].
In Spain, Black Friday is the most attractive event for 70% of the population, as compared to other similar events such as Cyber Monday [
13]. According to some estimates, 74% of Spanish people save money to spend exclusively on this event and to purchase on average two and three products. In addition, 88% of Spanish people trust in the veracity of the sales, which translates into a total average amount of 214€ per user [
13].
Against this background, the problem that has arisen in recent years is that many companies have used inappropriate promotion and marketing strategies [
14]. Specifically, several companies increased their prices several weeks before Black Friday to then lower them and, thus create “offers” [
6]. Strategies of this type rendered many social network users critical of these activities [
15,
16], which resulted in a damaged reputation and other losses for companies [
17].
In the present-day ecosystem, social networks are one of the main channels for communication between companies and users [
18,
19]. Based on this assumption, the present study focuses on the analysis of digital marketing and promotion strategies of main technology companies through Twitter on the Black Friday 2018 event in Spain.
It is well known that users develop content on social networks—known as UGC—to express their feelings about the products, services, and brands [
20]. These contents are published publicly and summarize the key information that, from the consumer point of view, contains the guidelines for future customers before they make their purchase decisions [
21]. To find out what these key issues are, companies can use market studies; however, such studies are time-consuming and expensive [
20]. For instance, several studies have demonstrated that relevant research on salient topics in UGC can help executives make decisions [
22,
23].
In the present study, an original and innovative method is proposed to quickly detect such topics with the use of Support Vector Machines (SVM) and data analysis techniques, focusing on the social network Twitter. The first research question addressed is as follows: What are the main topics in Twitter-based user interactions with the companies that participate in Black Friday? (RQ1).
Previous literature suggests that, on different occasions, understanding consumer sentiment and responses to offers made by companies is key to developing relevant strategies for effective marketing (see Vyas and Uma [
24] and Shahijan et al. [
25]). The importance of understanding these feelings can allow executives or marketing managers to make decisions based on consumer feedback, including their responses on social networks, such as comments and reviews [
26,
27]. Therefore, the second research question we address is as follows: What feelings (positive, negative or neutral) are associated with the main UGC topics surrounding the Black Friday event on Twitter? (RQ2).
Furthermore, previous studies [
28,
29] demonstrated that the communication of companies with their users on social networks should prioritize ways to increase engagement between users and brands [
5]. In fact, long-term relationships between companies and users promote user satisfaction with brands and lead to users’ sharing positive opinions on the Internet and social networks [
30]. These insights help brands to better understand their consumers’ behaviors, tastes, and habits [
31]. Thus, the third question we seek to answer is as follows: Is it possible to establish casual relationships between the feelings of the engagement of the UGC on Twitter, with the strategies of marketing and promotion of the companies? (RQ3).
To address these questions, we analyzed communication strategies of companies with Twitter clients, as well as seeking to understand the motivations and behavior of users on Twitter. Our aim was to establish whether companies were using relevant marketing strategies in social networks and whether they were appropriately communicating with users. In addition, we aimed to understand major themes and associated feelings in Twitter-based UGC, as well as to find out which companies used better or worse promotional strategies on Twitter, and why.
To this end, we used a three-step data analysis technique to analyze Twitter-based UGC. First, a topic-modeling technique known as Latent Dirichlet Allocation (LDA) was used to divide the sample of the tweets containing the hashtag Black Friday and the name of the companies in topics. Subsequently, sentiment analysis (SA) was performed to detect the feelings associated with the identified topics. Finally, in order to evaluate marketing promotions of individual companies, we analyzed the feelings associated with topics in the analyzed UGC per company. The contribution of the present study is that our results bridge a gap in previous literature in which Black Friday event in Spanish companies has not been studied using a knowledge discovery-based approach.
Therefore, the remainder of this research is structured as follows. In
Section 2, we review relevant literature.
Section 3 and
Section 4 focus on methodology development and data analysis. In
Section 5, we report the findings that are further discussed in
Section 6. Conclusions are drawn in
Section 7.
2. Literature Review
As discussed above, there is extensive previous literature on marketing promotions of specific events, including the Black Friday event on social media. For instance, Thelwall et al. [
12] analyzed the mixed feelings associated with Twitter-based user content posted in response to global events of great impact; the results of this study showed how users can ‘viralize’ content by generating UGC on social networks.
Furthermore, Bell et al. [
10] investigated which methods are effective to establish a good marketing strategy for the Black Friday day. This study made it possible to understand different marketing promotion strategies on social platforms based on calling user attention after knowing what their habits and behaviors are on the internet.
Likewise, Stewart et al. [
32] analyzed the relationship between Twitter keywords and consumers behavior in relation to daily spending, emphasizing the engagement of companies with users on social networks. The results of this study showed that users can get organized in communities of similar content that arises from the analysis of specific events and within a certain timeframe.
Following this approach, Shuai et al. [
33] compared Twitter and Weibo platforms in terms of user performance in response to world events such as Black Friday with the aim of understanding engagement and extracting insights that companies can use for their strategies on the Internet. Moreover, Ahsan et al. [
17] analyzed the sentiments associated with visual contents during social events in order to find out how data mining can help visualize and extract knowledge from the data generated on social networks.
In contrast, Chen [
34] focused on the analysis of sentiments in Twitter to determine the attitudes of the sender and receiver of the message from the communicative. This study aimed to understand user behavior and responses in this kind of digital ecosystems.
In addition, Khodabakhsh et al. [
35] analyzed Twitter user behaviors associated with important events that have a temporary nature, offering useful insights for the analysis of these events on social networks. Similarly, to Khodabakhsh et al. [
35], Zhou et al. [
36] used sentiment analysis of tweets posted during large social events to identify the feelings related to user actions and communication published on those digital platforms. Following this line of research, Tsolmon et al. [
37] proposed a new method to study Twitter-based UGC associated with social events. Furthermore, from the perspective of social impact, Tsytsarau et al. [
38] investigated the reaction of social media and user feelings towards new events.
Table 1 summarizes previous studies on Black Friday that used sentiment analysis approaches.
3. Methodology Development
In the present study, we used an improved three-step methodological procedure innovatively proposed by Saura and Bennett [
5]. This process works with algorithms of data analysis and data mining techniques applied to the UGC from social networks. Several previous studies have also used this methodology, which verifies its reliability and accuracy [
39,
40]. As this method uses machine learning and SVMs, technologies need to be continuously improved (see Raghavendra and Mohan [
41] and Alfrjani et al. [
42] for such attempts).
The primary purpose of this study is discovery, not hypothesis testing and not trying to control variables, but to discover them [
6]. Therefore, this research was conducted using a qualitative and explorative approach. This has been done with the design and integration of three different studies as indicated [
5].
We analyzed a total of 23 companies, all currently active in Spain operating in the technology sector. In fact, the offers and promotions offered by technology companies are a major reason of why the Black Friday event emerged globally. Our data were Twitter user interactions with these 23 companies throughout the period of 7 days: 3 days prior to the Black Friday 2018 event in Spain, the day of Black Friday, and 3 days after the event [
33,
43].
Data collection was performed for 20–27 November 2018. To this end, the authors connected to the Twitter API and downloaded a total of n = 5064 tweets from the interactions and engagement of Twitter users (UGC) with the companies that compose the sample using the hashtag #BlackFriday.
For data analysis, repeated tweets were eliminated from the dataset [
44,
45]. In addition, the images and videos containing the collected tweets were not analyzed, since we focused on the analysis of Natural Language Processing (NLP). In addition, retweets were used as independent tweets, because they were supported by different users [
5].
We also excluded HTC and Xiaomi companies from the sample, as these two brands do not have public Twitter profiles focused exclusively on the Spanish market.
4. Components and Data Analysis
As indicated above, in the present study, we used a methodology divided into three processes. With respect to the first process of analysis, we followed Saura and Bennett [
5]. The LDA model used in this research was developed in Python and can be found in Python library LDA 1.0.5 using Gibbs sampling [
45,
46].
As indicated in Saura and Bennett [
5], LDA is a mathematical model that divides a series of samples (such as documents, texts, comments, reviews, and so forth) into topics. The LDA topic modeling technique was initially developed by Pritchard and Stephens [
46] as a machine learning technique for topic modeling. Three years later, it was expanded by Blei et al. [
47].
This method measures the frequency of words and the number of times they are repeated in a database [
48]. Application of this approach yields a database of words and their frequency of occurrence in the database. Then, the words are divided according to topics [
49,
50]. Finally, the identified topics are named using frequently used words combined into a sentence that makes sense [
51].
The next step was a sentiment analysis (SA) algorithm that works with machine learning [
5]. This algorithm divides the sample of topics into three feelings: positive, negative, and neutral (see Thelwall et al. [
12] and Reyes-Menendez et al. [
39]).
Regarding the next step, the Krippendorff’s alpha value (KAV) was identified to verify the results reliability [
52,
53,
54]. This value is the result of training an algorithm that works with machine learning [
52]. Depending on the level of success of this algorithm, conclusions based on level of forcefulness can be presented [
55]. Understanding how efficient the methodology development is typical analysis approach when working with SVM algorithms [
56,
57,
58].
KAV should obtain a result equal to or above 0.667, so that the results indicate that the algorithm has been trained a sufficient number of times, although Krippendorff’s [
57] indicates that the minimum KAV should be adjusted according to the weight of the conclusions. In this sense, a high KAV could be ≥0.800, while a KAV between the measures 0.667–0.800 could be used to tentatively define and argue conclusions [
5,
56,
57]. The values for each type of conclusion and feeling according to KAV are shown in
Table 2.
The basic formula for KAV is the relationship characterized by observed disagreement/expected disagreement. In Equation (1), an apparently simple proportion is shown, as the calculation method is computationally very complex [
56,
57,
58]. The calculation process involves resampling methods such as bootstrapping [
57]. The calculations in Equation (1) are explained in depth in Krippendorff [
57].
Finally, the third step of the model was textual analysis (TA) that works with data mining techniques [
56]. TA aims to identify insights from a complex database with different objectives [
6]. These knowledge discovery processes allow companies to improve their strategies or analyze data from different analytic perspectives [
57].
For this process, it is important to divide the datasets into nodes [
57]. Nodes are manually divided classifiers of information [
5]. This process makes it possible to group a database into information nodes according to the associated feelings and to compute the Weight Percentage (WP) of the nodes (i.e., a measure based on the number of times words are repeated in the general database) [
5,
51].
6. Discussion
An intriguing finding in our results is that, in the identified topics, invariably positive results were obtained only for exclusive promotions and smartphones topics. This finding is not consistent with previous studies, such as Bell et al. [
10] who argued that in the eventual content that companies launch on social networks and that aims to promote specific events should have a pleasant, dynamic, and positive tone so that users perceive it as such.
We identified a total of seven different topics related to the content generated by companies. We found that companies base their communication in social networks on offering products and services and exclusive promotions. This tactic is not appropriate if we consider the results reported by Herráez et al. [
6], as companies have to try to generate content to interact with users and to create lasting relationships with them through these new digital channels. The results of using this strategy are consequently negative.
We discovered that three topics were negatively perceived by Twitter users, and these topics were related to frauds and offers that were not real. To make things worse, these contents were published by companies directly. The negative UGC about such offers clearly harmed online reputation of corresponding brands [
50].
Furthermore, based on the results of sentiment analysis, we can conclude that the companies associated with the most positive sentiment in Twitter UGC are Amazon, Game, Kyberoo, and PC Components. A detailed analysis of the UGC associated with these companies demonstrated that these companies were able to establish relationships with customers based on the offers and even launched personalized discounts based on user interaction or engagement in social networks with the brand itself [
10]. Therefore, we can see that some companies’ attempt to establish a relationship with users through Twitter to increase positive feelings about corresponding brands [
59].
However, in the case of Amazon, which obtained highly positive results, some user feedback was also negative. In part, this result can be attributed to the fact that our study period coincided with a strike of the company’s employees who used the company’s name as hashtag to generate content and to create narrative noise about Amazon in the Black Friday week event.
With regard to negative feelings, in our results, the worst strategies were developed by Media Markt and El Corte Inglés companies, whose contents linked to fraud and unrealistic offers obtained the strongest negative perceptions among Twitter users [
60].
As demonstrated by our results, users can get organized into communities to fight against brands [
29]. Users feel cheated by false offers in social media—e.g., those where customers are told that they can purchase something with an exclusive discount, while in fact the price has always been the same (see Mangold et al. [
61] and Berland et al. [
62] for similar results).
With regard to positive sentiments in the Twitter-based UGC analyzed, our results demonstrate that companies should generate exclusive promotions based on limited time horizons, where the discounts are real (see Hoffman and Fodor [
63]). In addition, on Black Friday, companies should also focus on products such as smartphones and its accessories [
4].
Concerning negative insights derived from our results, the present study demonstrates that companies should follow certain rules in their marketing strategies. In the first place, companies should avoid playing tricks where they raise the price of their products one week before the event and then subsequently lower the price to highlight the reduction as a discount (which is not real, in that case) to influence the consumer behavior. At present, this is a standardized tactic in commercial and strategic marketing [
60]; however, it should be used after a careful consideration of the type of social network and user profile on the Internet [
14]. Acting so creates a link of a company with fraud, as has already happened in the case of Media Markt and El Corte Inglés.
The consequences of the aforementioned strategy include users’ insults and noise, which makes it very difficult for customer support to change the situation, as users who feel cheated create a negative attitude among customers towards the company. These consumers may feel cheated [
58], which may increase the number of dissatisfied customers [
10].
Finally, key points that generate noise and are not perceived as positive marketing actions are related to offers and discounts that are not truly exclusive and are merely standard discounts. In this respect, our findings are consistent with those reported by Hoffman and Fodor [
63], showing that these marketing and sales promotion strategies in social networks should be taken into account [
64].
Likewise, trying to boost sales of products such as computers and accessories does not generate enthusiasm among users and is not perceived as an effective tactic by customers [
65,
66,
67]. This fact must be carefully considered by company executives willing to participate in temporary events based on offers and discounts published on the Internet [
68,
69,
70].
7. Conclusions
In the present study, we developed a novel and original data analysis process that aims to identify digital marketing strategies based on promotions. Our specific focus was on Black Friday 2018 in Spain. We analyzed the contents published by technology companies on Black Friday 2018, including user generated content about offers and discounts, exclusive promotions, as well as fraud and insults and noise. Therefore, we explored several tactics and strategies that companies should follow in social networks to succeed in events similar to Black Friday.
We also identified activities that companies should avoid, since such activities generate uncertainty and negative feelings in users who, in turn, speak negatively of companies and share their negative experiences with the digital community by publishing negative UGC. Such negative feedback affects the digital reputation of companies and generates negative perceptions of their offers and discounts, thus reducing the profitability of its shares.
Regarding the three research questions addressed, in RQ1 we identified and codified the main topics related to the engagement of UGC with the companies (EP, SM, FA, IN, CS, OD, CA). As to the second research question (RQ2), our results suggest that the most significant contribution of our findings is the importance of the company’s skill to establish relationships with their users through social networks, in the medium and long-term. In the event of a crisis or failed communication between users and brands, companies should carefully consider the criticisms of user communities in social networks and try to make neutral or positive engagement based in the company’s relationship with users in digital environment. If these strategies are not implemented correctly, the public image of the company on social networks can be damaged. The power of user communities and their opinions can quickly viralize, causing reputational losses arising from negative feelings expressed by users in their UGC. Finally, concerning the third research question (RQ3), our results provide meaningful insights about the companies’ strategies of promotion in social networks. Our findings can serve as guidelines of good practices for specific events developed through social networks.
7.1. Theoretical Implications
Regarding the theoretical implications of this study, it should be noted that, out of the seven topics that were identified, three topics (EC, PS and OD) could be used in further research as independent variables or constructs to establish statistical relationship in models developed with partial least squares structural equation modeling (PLS-SEM), SPSS, or Analysis of Moment Structures (AMOS), among other quantitative analysis methods.
Therefore, our identification of the topics makes an important theoretical contribution to this research area if we consider the exploratory approach developed based on topic discovery. The remaining topics should be carefully considered by researchers when developing studies based on systematic literature reviews or case studies, among other methods.
In addition, in the present study, novel approaches to brands and their reputation on social networks considering UGC reactions and behavior, have been discovered and confirmed. The original method used can be applied in further research to extract or discover additional knowledge with the analyzed UGC sample and additional big data analytics techniques.
Academic researchers should keep in mind that machine learning technology and SVMs are growing exponentially, and new methods and approaches must be applied to improve the reliability of the results and to obtain additional insights.
7.2. Managerial Implications
As indicated by Buckley and Casson [
23] decision making is vital for success in marketing strategies. Likewise, Cody et al. [
16] argued that these strategies should be specially designed for digital environments and social networks. Based on these conclusions, executives of technology companies, SMEs, or companies focused on both Business to Consumer (B2C) or Business to Business (B2B) can use the results of this research to understand user behavior in social networks such as Twitter.
Specifically, executives can use the results to understand how they should develop and implement their promotional strategies on Twitter, as well as how they should interact with users with regard to the published content to increase the positive engagement.
Moreover, in the technology sector and beyond, the executives or directors of digital marketing companies that participate in social network events where promotions and offers are made can better understand the main topics and use them in their favor and obtain insights that help them improve their strategies; similarly, they can also avoid possible crises or situations that could cause damage to their reputation and value in these digital ecosystems.
The limitations of the present study are related to the size of the sample and the country analyzed (Spain). In further research, it would be meaningful to use the same approach to investigate UGC from other EU countries, or to compare user content from different countries. Another limitation of the present study is related to the automatic identification of topics and feelings related to Black Friday 2018 event using SVM. In the future, our results can be used by other researchers for comparative and evolutionary studies of these actions with a focus on other social networks.