A person who had way too much time on their hands, basically someone who has no better life except to look at others profiles and be jealous or want to have their lives. Or a person who constantly steals another person's wall posts, photos, notes and posts them as their own. That's a real loser facebook stalker, they have no imagination or creativity for their own facebook updates, so they have to steal others reality updates to make themselves look/feel good. These people are sad cases of obsession and loneliness, they spend way to much time on facebook as well, by posting 20 posts a day.
"Elliott is such a sad,lonely person, he spends too much time looking at others facebook profiles attaining ideas for his new status update." That's a real Facebook Stalker, my friend told me!