UPDATE: Will has responded here.

The Centre for Effective Altruism has recently opened up for donations. This is the umbrella organisation for Giving What We Can (GWWC), 80,000 Hours (80K) and Effective Animal Activism (EAA, which I think is still formally part of 80K). I responded to Will Crouch in an email with a list of questions. You're welcome to add to the list in the comments and I'll make sure the questions get to him.

Will seems pretty cool about the whole transparency thing so any answers will hopefully make their way onto the LW Discussion board. Will (and Ben Todd) will try to take the time to give accurate and well-formed answers where possible.

CEA is based in the UK so figures are in GBP.