Quote from: sgornick on May 14, 2011, 06:57:45 PM

In addition to the list from the Bitcoin wiki is the list of charities in which donations through Witcoin can be made.
- http://witcoin.com/charities

Any charity can register to be included. Those who post, vote or reply on witcoin can configure their Witcoin user account such that a certain percent of the proceeds they earn after post, reply or voting can be donated to one or more charities of their choosing.

I can also attest first hand to the fact that witcoin makes an effort to determine that the listed entities are actually affiliated with the listed addresses.