There's some people in the world who crave acceptance because, to be honest, they're socially awkward. They seem to lack certain social skills that others take for granted. Those people are the ones who feel the need to post about everything they do, where they are, etc. I know some of these people, and they're a pain in the butt to see on your facebook news feed, because they dominate it. Seeing all of those posts makes you want to de-friend them, or at least block their posts from your feed. Thus the person feels neglected, which causes them to seek more attention, creating more posts about stuff no one cares about. It is a cycle of social ineptitude, and that is the cause behind this study's findings.