Is contributing money to something without contributing yourself & your time really contributing? I don't think so...
Also read this, about how billions of aid money to africa doesn't help anything:
SPIEGEL Interview with African Economics Expert: "For God's Sake, Please Stop the Aid!" - International - SPIEGEL ONLINE - News
You can't help people who don't want to help themselves.
So all these annoying rich people who donate blindly aren't doing anything to help. That's the bottom line.