# SNUXH: A Set of Social Network User Experience Heuristics
## 1 Introduction  
Nowadays, social networks are part of people's daily lives. In a study conducted by GlobalWebIndex in 2018 to 113,932 users from several countries [1], it was concluded that 98% of digital consumers are social media users, and adoption is high even among 55-64 years (94%). Social networks have evolved into multimedia platforms, and for this reason, users are now as likely to use them for keeping up with the news (40% of users) to stay in touch with friends (40% of users). On the other hand, 36% of users use social networks for entertainment. In a lower percentage, users also use social networks to share photos or videos with others (33%), to research/find products to buy (29%), to share their opinions (29%), and to create networks for work (23%). In the same report, it is showed that the most popular social platforms are Facebook (with an 85% of users with an account created on Facebook); followed by YouTube (79% of users), Facebook messenger (72% of users), and WhatsApp (66% of users). According to the study, there are 20 most used social networks. It is a fact that social networks are widely used. A social network can be defined as a social structure formed by people or entities connected and linked together by some type of relationship or common interest [2]. We can maintain this social network using devices, such as smartphones, laptops, tablets, etc., and applications. There is a large variety of social networks, and users use thosethat meet their expectations; social networks that allow them to perform the tasks they want to do (sell products, share with users, read the news, etc. ), and social networks where the interaction to be intuitive and pleasant, generating a good experience. If a social network is difficult to use or the users do not understand how to use it, they can get frustrated and look for another one. If the use of a social network evokes negative experiences among users, it will hinder the product's success on the market [3]. It is important to detect problems that prevent users from performing their tasks in a simple and intuitive way, and to understand what emotions are important for them in the interaction. In this sense, it is crucial to evaluate the usability and the experience that users have when using social networks, detect problems that may generate negative experiences, and correct them to generate greater user satisfaction. One of the most used methods to evaluate usability is the heuristic evaluation [4], which detects usability problems using usability heuristics [5]. Although the heuristic evaluation is oriented to evaluate the usability, it can be useful to evaluate other aspects related to the user experience (UX) [6; 7; 8; 9]. UX is not the same as usability. The UX is composed of several dimensions, such as accessibility, communicability, usability, among others. Thus, usability is part of UX, and depending on the set of heuristics used, it is possible to evaluate both usability and UX. In this sense, several authors have developed heuristics to evaluate UX aspects [9]. Well-known [PERSON]'s heuristics [10] are widely used to evaluate applications in a general way. However, social networks have specific features that differentiate them from other applications, so a generic set of heuristics may not be effective in detecting specific usability/UX problems [6; 11; 12]. Sets of heuristics have been proposed to evaluate social networks [13; 14; 15]. However, these sets focus on evaluating usability [13; 15] or specific features for a particular discipline (security and health-oriented social networks [14]) so other relevant aspects related to the UX are not evaluated with the existing heuristics. In this article, we present SNUXH--a set of user experience heuristics for social networks. The set was proposed to evaluate several aspects of the UX, including usability. The heuristics were developed in four iterations using the methodology proposed by [PERSON] et al.