I'm considering making a website where you can give to a charity anonymously This isn't a fun or easy problem to solve. Especially the clearinghouse of all cha

I'm considering making a website where you can give to a charity anonymously This isn't a fun or easy problem to solve. Especially the clearinghouse of all charities bit. There are 1.8 million nonprofits in the USA. Luckily for you I helped build this back in 1999. http://www.guidestar.org http://www.guidestar.org There are others but as far as I know Guidestar has the most comprehensive database. In fact, other sites purporting to do the same thing are probably syndicating Guidestar's data.