Well...it's reasonably self explanatory...accessing the internet using ElectroMagneticRadiation? instead of cables, modems, etc.
If you live in Hamilton, you might be interested in the Wireless section of the ISP page.
If you want to know more see the following HowTos
HowToWirelessHOWTO?
HowToWirelessLinksysWPC11?
HowToWirelessSyncHOWTO?
No other page links to WirelessInternet yet.