Today through Sunday (the 19th), if you're running the Chrome for a Cause extension every new tab you open in Chrome will function as a partial donation to a choice of charities. Admittedly, this is really just a clever / positive way to get people to try out Google Chrome for a few days but if it helps a few charities along the way, what's the harm? Great marketing ploy as far as I'm concerned. It's also interesting to see just how many new tabs one opens in a day...