Valve Developer Wiki

Via Gamasutra, the news that Valve has opened a Developer Community Wiki. From the post: "The system is intended to be a pool of knowledge that mod authors can contribute to, as well as consult for advice on how to use the robust Source engine. The Community is built using MediaWiki, an open-source GNU tool for allowing entries and posts to be edited and refined by anyone with an account. The same technology powers the popular Wikipedia, an online encyclopedia."