I just emailed like 100 of my friends to tell them to do this, and now I'm telling you too. Yes, it might be the second time this week, stop whining. I'm sorry. I'm a do-gooder. Instead of using Google.com try Goodsearch.com, it is powered by Yahoo and 50% of its ad revenue goes to the charity of your choice.
Here is a really cool article that proves that it's not fake - and it even mentions THON at Penn State: ttp://www.usatoday.com/money/smallbusiness/columnist/strauss/2006-11-19-giving_x.htm
So this holiday season, do the right thing. And remember, if you aren't an organ donor, it's pretty cool to sign up to do that too.