Ask HN: To which sites would you submit a charity deal?

We are running a "pay what you can" sale of the entry-level edition of our product with net proceedings going to charity. Someone posted a link to our campaign to MyDealz.de and we had dozens of orders from Germany within the next 24 hours, even though our product is fairly specialized - it's a Java development tool.

I am now wondering what sites in the US and other countries could do such magic. I have pinged BitsDuJour, but have not heard back yet. Any pointers?

I would also appreciate any other thoughts on how we could increase the exposure of our campaign. Just in case you want to check it out before providing any pointers or advice: http://bit.ly/PQahwD

Thank you,

Dmitry