I always thought a group based around the giving pledge would be great. You filter yourself to high value people because they're more likely to be able to affo

I always thought a group based around the giving pledge would be great. You filter yourself to high value people because they're more likely to be able to afford 10%. You have a sacrifice these people are making, and a reason to help others. If you help some random guy land a job where he's making good money it further your goal of increasing donations to charity.