https://www.gittip.com/So I found this site browsing around and I was really into it, as I am a huge git and github supporter, but as I was looking to give money and I saw they only support credit card payments. I was disappointed so I started to look for there contact us and I went to there irc channel on freenode and asked no one responded
BUT the whole site is open source so i think if some great python dev out there, look into it and converted into a bitcoin site that it could be a great thing here is the source code:
https://github.com/whit537/www.gittip.com