Gamers are a social bunch, despite the negative connotations that may currently exist with the term "gamer". For some reason, there's a belief that gamers enjoy spending time alone in the basement playing games in the dark, while it's actually quite the opposite. In fact, with the industry's emphasis on the multiplayer aspect of games, gamers are more social than ever. And until now there hasn't really been a place for us to migrate to.
There are social aspects to many sites, but that spans as far as creating a profile and posting comments on articles. Gameswise is a new website that heavily emphasizes the social aspect of video games. At it's core, it is a social network for people who love games -- with a ton of helpful game information thrown in.