One post I've got in the works is a list of websites that will help you save money and fellow freebie friend William sent in two more great additions for the upcoming post – Gas Buddy.com and Gas Price Watch.com!
The basic gist of both sites are to keep track of the ever fluctuating local gas prices thanks to user contributions. Think gas prices meets wikipedia. While Gas Buddy seems to be the larger of the two, Gas Price Watch actually had info on my tiny town thanks to a local resident who seems to make updates every day. Looking at the map, I see the station nearest me (which I usually fill up at!) has gas at $2.10 while half a mile away I can find it at $1.89.
As a matter of fact, I even registered a free account on both sites and updated a price I saw today. That's the beauty of the sites. There's such a wide array of people contributing that the prices stay pretty current. So the next time you realize you may need to fill up soon, find the cheapest gas near and maybe plan your route home from work accordingly. You won't save millions, but even if you only save a few bucks every week, the savings add up quickly over a year!