Google has become the standard search engine of choice around the world, but it's not the only one in the game. Microsoft's Bing is a fine alternative, but getting people to switch is hard. Would you switch your search engine if Microsoft were to donate $3 to schools in need?
Microsoft has created Search With Purpose, a page that will add Bing as a search provider in Firefox and IE (though the whole donation process will work with Chrome and Safari too) and send you a $3 donation code for you to enter in yourself.
The page notes "Bing will donate up to $100,000 in $3 donation codes during the promotion. Donation codes may only be used at DonorsChoose.org and expire on August 31, 2010." Nevertheless, it's to a good cause and you don't really have to be committed to Bing if you find Google is still a better fit for your internet needs.