Shameless self promo.
I released a new Facebook application into the wild this morning: Cheap Gas!
Based upon your current location’s Zip Code, the application will show gasoline prices near you, and indicate by grade which price is cheapest. Click on the name of the station to get a Google map to the location.
Will probably be a few days before it is in the FB App Directory (and even longer until searchable).
Even so, worth a peek. Would love any feedback.