Based on these results, it seems surprising that Facebook enjoys such great popularity. The question arises as to why people continue to engage in Facebook activities if as a result, they feel like they wasted their time and feel worse than before. Is it possible that users have a biased anticipation as to how Facebook makes them feel? From other areas of psychological research we know that wrongly predicting one’s own feelings and thoughts can be a common error with drastic consequences, commonly referred to as an affective forecasting error (for a review, see Wilson & Gilbert, 2005). For example, people fail to notice that being able to change a decision at a later point in time makes them unhappier than having to stick with the decision and therefore, they prefer to have the option of changeability (Gilbert & Ebert, 2002). Similarly, people do not realize that taking revenge will make them feel worse than before (Carlsmith, Wilson, & Gilbert, 2008). Instead, they expect the opposite emotional outcome (i.e., to feel better) and therefore readily take the chance to punish an offender (Carlsmith et al., 2008). In both cases, the behavioral consequence of the forecasting error entails an emotional state not simply of different intensity than expected, but of entirely different quality. Likewise, Facebook users might mispredict Facebook to have positive effects, preventing them from reducing the amount of time spent on the network and thereby decreasing their happiness. In a third and final study, we will examine the answer to this question by considering the possibility of an affective forecasting error.