Mostly wikis, voir billet suivant (et merci Marlène).

Boing Boing: Jimmy Wales to Beijing: Wikipedia won’t censor
Wikipedia founder Jimmy Wales has refused to censor the content on the Chinese version of Wikipedia, resulting in its being blocked by the Chinese government.
WSJ.com - Will Wikipedia Mean the End Of Traditional Encyclopedias?
Can Wikipedia’s everyone’s-an-editor approach produce a reliable resource tool without scholarly oversight? Are traditional [...]