NewsCloud, which developed the Minnesota Daily Facebook application and HotDish, is offering the source code to other college papers interested in customizing it and managing it themselves. (Disclaimer: I was editor of the Daily when we launched the application.)
The application allows users to post links to articles that they find interesting and rewards them for doing so. Users also get points for engaging the content in other ways, such as sharing it with their friends, commenting on it, etc. The user is rewarded with points that add up to prizes that the news organization offers.