This just gave me a startup idea. What about an API that webmasters can use to predict which users are likely to be offensive / harassing?<p>Kind of like SiftScience or Akismet but for harassment.<p>Probably tough to monetize that though. But maybe you could just sell the algorithm to Yahoo!<p>Edit: It would use text searching on offensive words, and tag users based on OS, browser, cookie fingerprint, ip, device fingerprint.