My Mile Marker, a site by Sidebar Creative, is a very simple way to track your fuel consumption. I have been using it since July, and if you are regular in updating the site with fuel usage information, you will soon start to see stats like the one below.

Well, at least the gas price is going down! I usually write down the mileage on the bill and enter the information on the website, but for convenience, My Mile Marker provides both a mobile version of the site, and the option to send data via twitter.

The site is still in its infancy and lacking in features, but definitely has potential. I wish it had some social aspect to it, like showing most efficient fuel consumers, cars, location, etc. A Facebook application of this kind of service would be nice.