Google set up a new site that uses their Google Moderator application to help you save money in these hard times. If you have any money saving tips, you can easily share them with everyone at http://www.google.com/tipjar.
There have already been 1,179 tips submitted, most of them are obvious, and pretty much don't need to be said at all, but some are actually pretty good. For example:
Clean your car’s air filter. A clean air filter can improve your gas mileage by up to 7%, saving you more than $100 for every 10,000 miles you drive in an average vehicle.
I'm not sure about the accuracy of some of these statements, but it never hurts to try some of these ideas out.