From the Humble Introversion Bundle, I have a key that redeems for Crayon Physics Deluxe, Aquaria, and Dungeons of Dredmor. The only one I don't have is Dungeons of Dredmor, so if I redeem, the other two licenses get wasted. DoD, however, is on Steam for $2.49 on sale until June 2nd. If someone wants to do a trade, i.e. you get DoD and I give you the key for the other three in exchange, it's a good way to get three good games for $2.49. Let me know if there are any takers.