Thanks for sharing, I was planning on buying World of Goo at some point and some of the other games look really cool too. I just bought it and also got Samorost 2 for free.
Really cool of the developers to do this. Here are some companies that are probably only being run by a couple of people and they're willing to put up all their sales through this for charity. Meanwhile, huge game companies usually don't. Good for these guys.