I like this, a lot. I think it could possibly hopefully be an effective way to remind/spur people who keep meaning to donate but forget to just go out there and do it. Kinda like the Haiti text campaign.
I'm not so in love with Facebook being the payment processor, but *shrugs* their security people don't have a reputation for being particularly horrible.
So, have there been any fundraising campaigns that have made you go "hmm, that's kinda awesome" lately?
ETA: I also love ConEd for making donations to their EnergyShare fund ($200 grants toward electricity bills) easy-just add a $1.00 when paying the electricity bill.