I'm sympathetic to the effective altruist movement, and when I do periodically donate, I try to do so as efficiently as possible.

I would love to see a splinter group, Efficient Altruism. I have no desire to give as much as I can afford, but feel VERY strongly about giving as efficiently to the causes I support as I can. When I read, I think from EA themselves, the estimated difference in efficiency of African aid organizations, it changed my whole perspective on charity.