Over the weekend Joltage sent out an email to its customers that by the end of this month they would stop offering its wireless Internet subscription service. Joltage was one of the first wireless Internet Service Providers, and their model was to convince places like coffeeshops to set up a WiFi network and then install Joltage’s software. For a monthly fee you could subscribe and get service at any Joltage-enabled hotspot, and the coffeeshop would get a cut. Looks like they couldn’t get enough locations or subscribers to sign up, either way it bodes poorly for other wireless Internet Service Providers like Boingo.