Looks like Purewire has taken a page from AOL’s AIM Fight and have put up Tweet Brawl
AIM Fight attempts to determine how popular you are right this second by looking at your online buddies and their online buddies out to the third degree of separation. It actually uses people connected to you so you can’t game the system by friending the world (like that stupid Luke Wilson AT&T ad).
TweetBrawl is merely follower based. The results aren’t going to change unless someone loses or gains a lot of followers.
If you want to follow me at @infosectweet maybe I’d have a chance of wining one of these things.