If you didn’t know already, activating the code from adult swim and receiving your robot chicken account would make your account premium status. 

http://forums.steampowered.com/forums/showthread.php?t=2787167

Any of you free to play people who were lucky enough to snag one before today should be rejoicing, unless some freak error kept your account from going premium. 

Anyway that is all :]

-Oppa