I have used it at Starbucks but when I compared the price I might as well use my sprint card. I only do mail so speed is not as big of a factor as if I was browsing.... I do go wifi when I am hanging out for awhile, like if I drove my daughter to set and have hours to kill...
Along the same lines - one of our customers is the Historical Mission Inn in Riverside...
www.missioninn.com (beautiful historical hotel) and they are going to offer WiFi as a value added vs profit center. They have a coffee company on the grounds and restruants and feel they need to have it there to be in the market.