Computer geeks are the ones hacking Google Maps. Computer geeks like WiFi. No surprise, then, that several of the map hacks using the Google Maps API involve wireless hotspot locations. Maps of free WiFi access points are available for New York, Chicago (click for a suburb; buggy when I tried it) and Portland, Oregon; this map shows EVDO access point congestion, but it’s apparently buggy. Via Google Maps Mania (1, 2, 3) and MAKE: Blog.