We have just completed uploading new coverage maps for all of the public AP's. Some of the resolutions are still a little low, but they will give you an idea of if there is coverage in your area. If you want an actual analysis done as to if you should be able to see an AP, Contact Us with your address/lat+long and we will run the maths for you.
EDIT: The combined coverage map now has a streetmap underlay. For best viewing please use the kmz and google earth.