When I'm wrong I admit it, and I'm wrong here. I apologize for attempting to pass along false information.
Hitting the "Report" button only shows gas stations within a few blocks, and it looks like this is only to be used for reporting prices (duh). Hitting the "Menu" button shows a list of stations within several miles. From my current location (inside a building, so the location of the nearest cell tower) I see stations at least 2.7 miles away.