Fireflies, iPhone tracker and Apple Q&A on on Location Data

You probably know by now that your iPhone collects the position data of wifi and cell networks near by. Google Android devices as well. 
http://crowdflow.net/
http://petewarden.github.com/iPhoneTracker/#0
http://images.apple.com/pr/library/2011/04/27Apple-Q-A-on-Location-Data.html