GasPriceWatch is a great idea: harness the power of crowds to identify the cheapest gas station in an area. Help markets be more efficient! Strike back against temporary locational monopoly and impulse purchases! Make the oiloligopolists fight for your dollar!
GasPriceWatch claims 105,690 “Volunteer Price Spotters” who turn in 43,762 prices per weekly, covering 126,860 US Gas Stations.
But none, it seems, near where I live.