Are there any new social networking sites that could be more interesting

I think linkedin could be more interesting. Right now, it's main feature is for career and professionalism. So although I think it could be more interesting, that's not always for the best, since it could lower their professionalism. As for how a social media site could be more interesting, I would say more interesting content, or having a system that makes interacting with content interesting (playing a game, pretty animations, etc)