With San Francisco's municipal Wi-Fi program stuck in purgatory thanks to EarthLink's budget concerns, Internet service provider Sonic.net aims to be the city's wireless savior. Not that legions of dirty hippy leechers deserve free Wi-Fi. Nonetheless, Sonic says customers can obtain a subsidized wireless mesh router and hook it up to a DSL line. Why? To create a network of wireless access points. Web surfers browsing from the wireless network will be served Google ads to subsidize their surfing. Sonic will implement a profit-sharing plan that will credit their customers' accounts. Sounds like both a cheap attempt to turn EarthLink's woes into free PR, and a blatant ripoff of Fon's business model. More power to Sonic. A plan so crass can't help but work.