Peer-to-peer sex education

From Ftrain I found this link to a sex wiki that calls itself “the Internet’s first wiki on sex.”
This might make a good test-case for whole authority-of-wiki references debate. Will it spread disinformation or will it incrementally begin to give better information than other sources online or off?
In other wiki news, Wikipedia has hit the one-million article mark (via Waxy [via Joi Ito]).