I've lived in San Francisco for about 7 years. I went to school at USF and after I graduated I stuck around a bit longer because I just love the city. I recently moved out to the south bay just so that I could save up some money and pay of some debt, but I still work in SF. I commute every day and so I'm glad that Airbnb exists. I only wish I knew about this site when i lived in the city!