Resource Nation has an interesting article on how Obama Raised 87% of his Funds through Social Networking.
In January, Obama set a record for donations in one month by raising a total of $32 million dollars, $28 million of which was raised online. From these $28 million in online contributions, 90% were under $100, with over 250,000 contributors.
This really shows the power of micro-donations, in a way similar to crowd-sourcing.
Time to get me some online contributions!
Update