Citizendium - Wikipedia 2.0?
After all, these days everything comes with a 2.0 tag :-).
The Citizendium (sit-ih-ZEN-dee-um), a “citizens’ compendium of everything,” will be an experimental new wiki project that combines public participation with gentle expert guidance.
It will begin life as a “progressive fork” of Wikipedia.
That means - to begin with it’ll have all the wikepedia articles, and then people start making changes to articles in the Citizendium.
Although intentions (without any comments on enmity between wikipedia co-founders Jimbo Wales and Larry Sanger) and direction looks right for Citizendium; yet it’s very difficult for any new project to gain the critical mass, the success like Wikipedia. IMO, number of trolls you get is one quantifiable/definite meassure of popularity. And even though wikipedia model is arguably flawed, it has proven to be good enough so far.