Back in August, I posted an IQ-tip about GoodSearch.com. If you recall, that's the search engine that allows you to contribute to your favorite charity every time you conduct a search (and it costs you absolutely nothing!). Since then, I've been using GoodSearch pretty much exclusively and have been able to raise a good bit of money for some of the charities I support (you don't even want to know how many searches I do each day, especially for Tuesday Turnip).
Well, here at the _floss, the philanthropic tips just keep coming. Allow me to introduce you to TurtleTip.com. The basic concept is simple: whenever you get crap service at a restaurant, simply give the waitperson a smaller tip than normal and a note from TurtleTip, explaining that the rest of his tip has just been donated to a charity of your choosing.
I think it's pretty ingenious, actually, and have already signed up. Check out all the details over at TurtleTip.com.