information

SwiftRiver is a free and open source software platform that uses a combination of algorithms and crowdsourced interaction to validate and filter news.

And they have a Drupal module: http://drupal.org/project/swiftriver

Could definitely be a complement to Visions Unite, it isn't a replacement, it uses user input but the focus is on automated filtering.

LittleSis is a free database detailing the connections between powerful people and organizations._We bring transparency to influential social networks by tracking the key relationships of politicians, business leaders, lobbyists, financiers, and their affiliated institutions.