Github, Bitbucket, Google code, Sourceforge (even Stackoverflow!) - it doesn't really matter where. It just needs to be public.
The OP's comments about Stallman and "Free software fanatics" are way off the mark; technical hiring staff just want to see your code. Fizz Buzz be damned! The code cannot lie!
And if your precious projects are too secret and awesome to be seen, then I very much doubt I'll hire :)