OneTrueFan

OneTrueFan is a web gamification platform that helps site visitors earn badges and points for interacting with and sharing content on their favorite websites, while enabling publishers to build loyal communities. The service integrates data from Twitter, Facebook, Tumblr, Digg, Delicious, and other social networks to surface contributions and social connections across sites. Publishers install a site widget; users install a browser add-on to participate across the web. The platform highlights the social communities that already exist around content, showing who's visiting and what they're sharing.