fill6 San Francisco Cafes on the Internet Fortune Magazine reports that eighteen doffeehouses in and around San Francisco have gone on-line, installing computers terminals that operate more or less like jukeboxes. A quarter in the slot buys four minutes during which you can hook into the Internet. Says the founder of SF Net, which builds and programs the cafe computers: "We specifically target cafes in low-income areas. We're trying to get the have-nots on computer." Chat network is the most popular feature of the cafe's computer. There are 450 subscribers who pay $7 a month for access to the system from home. Negotiations are underway for similar installations in New York City, Minneapolis, and Atlanta.