Since no one bit my Socratic lure, my sequence of answers would have been to point out that SIAI is a charity, charities are nonprofit corporations, corporations keep records of spending, and often make them public; as an IRS-recognized charity, SIAI is obligated to make reports public, and some googling then turns up GuideStar as a source, at which point it’s easy to download their PDFs from SIAI and finally answer the question—what does SIAI spend its money own?
Since no one bit my Socratic lure, my sequence of answers would have been to point out that SIAI is a charity, charities are nonprofit corporations, corporations keep records of spending, and often make them public; as an IRS-recognized charity, SIAI is obligated to make reports public, and some googling then turns up GuideStar as a source, at which point it’s easy to download their PDFs from SIAI and finally answer the question—what does SIAI spend its money own?
I did this earlier for salary information: http://lesswrong.com/lw/2l8/existential_risk_and_public_relations/2ywt There are a lot of interesting things in the filings; I once wrote an essay on what I found in the filings for Girl Scouts: http://www.gwern.net/Girl%20Scouts%20and%20good%20governance (See also Discussion post.)
EDIT: for an analysis of SIAI, see http://lesswrong.com/r/discussion/lw/5fo/siai_fundraising/