I thought this was a really simple, powerful idea with a lot of merit. Even if you don't follow the premise that people who have a need will reply rapidly, you

I thought this was a really simple, powerful idea with a lot of merit. Even if you don't follow the premise that people who have a need will reply rapidly, you can still discard their request (with discretion) because clearly they're not good customers... They Want but won't work with you to help you Give, they just want to Take. Ooo, Metaphoric.