Publishers with a Purpose is a group of online publishers who have pledged 5% of their total ad inventory to selected nonprofits and social causes, with the shared goal of making a difference in our neighborhoods and around the world by grouping together. Started by Flavorpill in October of 2009, PWP is a collaborative effort of world-class, independent publishers and important local and global causes which regularly update this site with ad creative around their latest projects. Our goal is to raise awareness and money for these worthy organizations. With this 5%, our founding publishers already represent more than 40,000,000 monthly impressions — a clear example that together, we can make a difference.
via publisherswithapurpose.org
A really nice idea. Not-For-Profits can add creative to the site. Publishers can pick it up and run it.