I found this on their website, but I would really like to know where the money comes from:
ISPU is a 501(c)(3) nonprofit research and educational institute. All contributions to ISPU are tax exempt. Please donate online using PayPal® by clicking above link "Contribute to ISPU" or send your donation to:
Institute for Social Policy and Understanding
43151 Dalcoma, Suite 6
ClintonTWP, Michigan 48038
My guess that most of it comes from Saudi Arabia. The fools and idiots who voted in the Democrats in '06 contributed the rest.