There's a new wireless access system out called Sputnik which gives you free roaming wireless access in exchange for sharing your own network. It's not technology, it's Sputnikology! Actually this looks pretty cool. Using their software (windows only) and any old wireless card it will turn your PC/Laptop into a wireless network gateway. Meaning that anyone near our house (hikers, farmers, lumberjacks?) could share our bandwidth. Their locator doesn't show any access points out here and, according to their (mapblast) map, there are only seven in the SF area.