Use FuelFrog to Keep Track of Your Mileage

FuelFrog is a nifty little app that allows you to keep track of your driving, your fuel economy, and your gas expenses. It's no more than a tricked-out excel page, really, except for one killer feature: it's integrated with Twitter. That means that whenever you hit the gas station, you simply tweet your miles since your last fillup, the price per gallon, and the amount of fuel you buy. (Whoa! There's finally a useful thing to do with Twitter?)

Everything gets imported to FuelFrog, which then keeps track of your miles per gallon and gives you cool little charts to play around with. Now you've got exact details for your business trip expense reports--or if you work for yourself, an easy way to keep track of your fuel write-offs. (Thanks Web Worker Daily)