geolocation, which is what Google obviously wants them for
Bingo. A neat idea made almost moot with GPS chips in cell phones. If you know where the WiFi is, you can look up the location of the WiFi via Google -- without a GPS. I mentioned in a similar
/. article about placelab.org
which I think maps whichever radio they're able to get data from.
I experimented with this stuff back in 2002 when I created wifimaps.com
, which is a wardriving map application, which harvests data from wardrivers. I'm not a math guy, so I used a weighted average for estimating the WIFi signal source. Mapserver
is kinda neat too, which I used since Google Maps didn't exist yet.