I planned on putting in a plug for goodsearch in at some point, but the situation in Haiti has made it rather timely.
If you head on over to the Goodsearch homepage, you'll see a grey bar towards the bottom of the page marked 'Who do you goodsearch for?'. You can type in a phrase in the bottom search area and it will come up with a list of charities, shelters, museums, aid groups, schools and charities with that phrase that will show up in a drop bar.
For a timely example, if you type in the phrase 'Haiti' into the 'Who do you goodsearch for?' function, more than 50 organizations that were active in Haiti before the earthquake- including Wyclef Jean's Yele Haiti- will show up on the drop bar. Simply select an organization- let's say Haiti Lumiere from the drop bar and begin searching via goodsearch. Goodsearch will then donate $.01 per search you use through them. Now, sometimes this blogger is intentionally vague in his search terms, which means that goodsearch will automatically suggest other, more specific phrases to search with.....which means you bump up the total raised while searching.
Also, people enrolled in American Airlines AAdvantage programs can earn bonus frequent-flyer miles when donating to the Red Cross' Haiti relief through a link on the airline's website.