I got it from the Humble Indie Bundle, but I already have the full version. If you post here requesting to be put in, in about an hour and a half I will put all the names in a hat, and the first person I pick gets the code and can do whatever he wants with it. The trial lasts until the 14th.
UPDATE: I'm going to make it fun, I'll pick 5 names from the hat, then draw one from those 5.