Baidu Baike (aka Baidupedia) just launched -- it's billed as a "Chinese Wikipedia" (though it's not actually a wiki -- users submit content and administrators must approve it). Censorship, of course, since it's a Chinese endevour: no mentions allowed of Tianammen Square, democracy, human rights, etc. The launch coincided with a crackdown on attempts to access Wikipedia from the Chinese mainland.

It's not all bad. Baidu Baike could act as an interesting testing ground: a highly publicized, widely used system somewhere (structurally) between Wikipedia and Everything2.