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Purpose -The purpose of this study is to explore the appeal of social networking services (SNS) games from the perspectives of game usability and the functionality that is facilitated by the internet. Why players prefer SNS games to other types of games and what specific characteristics causes them to be addicted to continuous game play are the two critical issues to be probed. Design/methodology/approach -The authors interviewed 11 experts and surveyed 321 gamers using a questionnaire to gather the data about their preferences. The authors believe that a preferencebased study can reveal the underlying reasons for the appeal of SNS games. The collected data were analysed using Quantification Theory Type I. Findings -The semantic structure of appeal, determined from the interviews of experts, shows the hierarchy of the relationship between the types of appeal or appeal factors, the reasons for gamers' preferences, and the specific characteristics of SNS games. According to the statistical analysis, the three most important appeal factors of SNS games are "easy and convenient", "friendly and lively" and "social interaction", and these are affected in varying degrees by particular reasons and characteristics. Practical implications -Based on the findings, the paper hypothesises that the popularity of Facebook SNS games can be ascribed to the design of game, which targets the psychological preferences of players. Originality/value -SNS games have become very popular due to some of their appealing characteristics. The findings provide important information for designers and researchers of Facebook SNS games. The study also contributes to the field of human-computer interaction in cyberspace.

The rapid growth in Internet technologies has led to a proliferation in the number of Open Educational Resources (OER), making the evaluation of OER quality a pressing need. In response, a number of rubrics have been developed to help guide the evaluation of OER quality; these, however, have had little accompanying evaluation of their utility or usability. This article presents a systematic review of 14 existing quality rubrics developed for OER evaluation. These quality rubrics are described and compared in terms of content, development processes, and application contexts, as well as, the kind of support they provide for users. Results from this research reveal a great diversity between these rubrics, providing users with a wide variety of options. Moreover, the widespread lack of rating scales, scoring guides, empirical testing, and iterative revisions for many of these rubrics raises reliability and validity concerns.Finally, rubrics implement varying amounts of user support, affecting their overall usability and educational utility.