FYI. A friend tipped me off to Good Search. It's a bit like Google, but you sign up and register for a charity and each search you do accumulates cash for that charity. On average, a penny is earned each search. Apparently the ASPCA's earned over $11,000 although I'm not sure over what time period. I had a hard time narrowing down to one charity, but have been very pleased with the search engine results I've received since I started on Tuesday there.
If you'd like to check it out yourself, see
http://www.goodsearch.com/