Update 2014-02-24

Update 2014-02-24: I still think this is a good idea, but I'm less enthusiastic about it than I was. The big problem is that it makes your actions less legible and harder to explain. If I say "I gave $X" that's clear, but if it's "I claim moral responsibility for donating $X, including $Y that I donated directly and $Z that other people gave on my behalf as a kind of payment" I need to explain a lot of background.