Taner Edis on the generosity of the religious

Taner Edis at the Secular Outpost comments on a recent article by Jon Haight about the benefits of religion, including its impact on generosity.

I've previously offered some comments on evidence that conservatives and the religious are more generous than liberals and the secular and that believers are more generous than atheists. I'll add that I doubt that studies of charitable giving dig deep enough to uncover whether the giving is going to charities like these. Is it really being more generous if your charitable donations aren't being used to actually do good?