Table 2 reveals support for Hypothesis 1: extraversion was positively associated with updating more frequently about social activities and everyday life, and with using Facebook to communicate. A further regression analysis showed that the use of Facebook to communicate predicted the frequency of updating about social activities and everyday life over and above the control variables and other personality traits (b = .25, p < .0001). Examination of the 95% bias-corrected confidence intervals (CI) from 1000 bootstrap samples revealed that the positive association of extraversion with updating about social activities and everyday life was mediated by the use of Facebook to communicate (b = .03, p = .05 (CI: .003–.05)). These results further confirm that extraverts use Facebook, and specifically status updates, as a tool for social engagement (Ryan & Xenos, 2011; Seidman, 2013). Hypothesis 2 was only partially supported: neuroticism was not associated with updating about any of the six topics or with using Facebook for self-expression, but it was associated with using Facebook for validation. Indeed, neurotic individuals may use Facebook to seek the attention and support that they lack offline (Ross et al., 2009).