Userati was an interesting plan we had to make more money from advertising on user generated content websites. We figured we could analyze user on Twitter and give them a rating based on their profile and tweets (user + Rating = UseRati). That way we could offer an advertiser a bunch of safe (5 star) twitter profiles and allow them to only advertise on their Twitpic or Mobypicture pages. These rated profiles would be worth a lot more than 1 star rated profiles that might show NSFW content, which would be bad for an advertiser.
Read the full story about Userati.com over at The Next Web.