It's not the person posting 10,000 pictures a week of their cat who's the big-time Facebook user, even if you might think so.
Instead, it's the quiet ones who are logging in longer, says an assistant professor in the Communications Arts Department at UAH.
"The shy people spend more time on Facebook, but they disclose less information," says Dr. Pavica Sheldon, who has done several studies on use of the social media site by university students. (Sheldon, P., 2009; " 'I'll poke you. You'll poke me!' Self-disclosure, social attraction, predictability and trust as important predictors of Facebook relationships," Cyberpsychology: Journal of Psychosocial Research on Cyberspace,3(2), Article 1, 2009)