If you limit your choice of charity to one working on FAI, I am not aware of any others. However, for a group that has demonstrated results in their domain: Schistosomiasis Control Initiative.
I don't see why donating to SCI would convince people with thomblake's skepticism.
I intended Leveling Up in Rationality to communicate this:
But some people seem to have read it and heard this instead:
This failure (on my part) fits into a larger pattern of the Singularity Institute seeming too arrogant and (perhaps) being too arrogant. As one friend recently told me:
So, I have a few questions: