The Cohhilition

From a German site, they give out 1000 enclave keys an hour along with 250 of East. Ties directly to your Steam account, and you can't use 10 minute email. The site can't handle more than 10 people at the same time with out crashing ( :p ) so the site might get slow whenever the keys are released every hour.
http://www.dlh.net/en/ (English version of site) Just sign up with some quickly made aol email or with Facebook and then go to Profile/keys after you sign in (conformation email has the default password for your account).

Thank you for posting this. Always good with free games.