WiGLE mentioned in Microsoft TechNet discussion

[bobzilla]

http://www.eu.microsoft.com/technet/tre ... ec0310.asp
"There are some really good wireless security measures you should be implementing. Things like WEP, 802.1X, are all easy to implement. If you are not using anything, chances are it is un-secure. You can hit http://www.wigle.net/gpsopen/gps/GPSDB/ which displays a bunch of unsecure places by area."