Thank you for writing this.
Please could you add to the top of the Google doc:
This would make it easier for people to judge for themselves how much weight to put on your advice.
Thank you for this post. I agree with its central premise and I know that Michelle is already working on an impact evaluation that will contain a lot of this sort of information.
However, your post contains a couple of misleading points that I thought would be worth correcting.
For future reference, it may have been courteous to contact someone at Giving What We Can before posting this. In case that sounds intimidating I can assure you they are all very friendly :)
(Disclosure: I manage Giving What We Can's website as a volunteer.)