Abstract
Despite the recent popularity of online social networks, there are few available studies that explain the differences between real life and internet social networks. Authoritative information about the outcomes of using social networking websites is even more sparse. In an attempt to close this literature gap, this exploratory study found that online social networks and real life social networks are significantly different in terms of social network size. The results also show that gender and extroversion are the major predictors of both online social network size and time spent online for social networking. Perhaps the most interesting finding is the negative impact of self-esteem on inclusion of strangers in online social networks. Additionally, directions for future research are provided.