The online fundraising platform, Firstgiving, has an interesting promotion running right now.
If you follow them on Twitter at www.twitter.com/firstgiving, and tweet them at @firstgiving the URL of your favorite firstgiving campaign, your favorite campaign will be entered in a drawing to win a $250 donation. The more people who tweet about that campaign, the greater its chances of being chosen for the $250 donation.
I haven't entirely wrapped my head around how a nonprofit could use a similar approach, but I did like how they described step-by-step, with screen shots, how to use Twitter in their blog post, Twitter for your Cause and Enter to Win $250 Donation.
It's SO important when launching these kinds of campaigns to explain how to use the tools.
Side Note: Joe Solomon posted a list last week of 19 Social Action Platforms on Twitter, including Firstgiving.