Wi Fi technology looks like the most organic source of development of network infrastructure. Like phototropism, the bandwidth grows and develops in the direction of the most interest and need.

The Champaign-Urbana Community Wireless Network (CUWiN) has built a communications network using wireless networking equipment. This is essentially the same “WiFi” equipment used in homes and offices, but we put it on rooftops to connect neighbors and form a high-speed community network.

http://www.cuwireless.net/