A cool little web app at Carnegie Mellon University, that shows who is currently on the wireless network and which access point they are using.
cmuSKY also has some other interesting maps and statistics about their wireless Internet setup.
Update:
Oops, this was already on boingboing.net.
New cmuSKY url: http://cmusky.net.cmu.edu
Posted by: Ophir Tanz at April 23, 2004 07:52 PM