I'm 39 also and dont have a myspace account, but I know a couple of the younger people where I work have them and what they put on their is nothing like their true persona. It's almost like their fantasy land where they put down how they want people to think of them, not how they really are.
I didn't see Maroney's site, but somebody mentioned Maroney knew how to "pimp the ho's". One the young kids at work constantly mentions in his site that he's away and probably out bedding another girl (I put it nicely as to how he phrased it). When in truth I don't think he could get laid in a whore house with a hand full of fifty-dollar bills.
It's a fantasy world where people can put what they want in anonimity because more than likely they wont meet the people that are reading the crap their posting.
Maroney's problem is he was picked in the first round of the NFL draft and now everybody knows him.