As I've mentioned before, movement of everyday interactions on to the web (also known as social networking, or Web 2.0) is changing the face of philanthropy by creating a new funding model that I'm calling "Distributed Funding."
PayPal is a natural platform for this type of funding and it's recently launched a promotion designed to encourage non-profits to use it's services to generate online donations rather than the many others out there (like Kintera or JustGive). As part of its promotion, PayPal is offering $50 to organizations that generate $500 in online donations using the PayPal donate button within a certain time window.
Another organization called good2gether appears to go one step further (they have yet to launch, so their service is a little tough to evaluate) by adding search into the mix. (An aside, their tag line is "Transforming Cause Into Effect" - but there's no relationship between Cause+Effect and their company).
All of the entrepreneurial activity in the sector - from both established players and recent entrants - points to continued growth for the "distributed funding" model. Non-profit organizations that establish pathways in this new frontier now will be much better off than those that don't.