I don't expect anyone to do so, but I was asked today if I had a donation button, and I didn't have one.
So, after thinking it over a bit, I've added one to the bottom of http://ansible.github.com/ which just goes to Paypal.
Use it only if you want to.
Some of the best donations remain code, ideas, and sharing Ansible with other people like user groups. These are invaluable and are why we are here today.
--Michael