Dennis Crowley, co-founder of the groundbreaking location-based mobile startup, Foursquare, earlier this week recalled the urge to give his interest in location-based services another go after his startup Dodgeball was bought by Google in 2005. But he knew that developing a mobile app meant courting a lot of heartache: endless versions for numerous devices, fees to get certified by carriers and ultimately no sure way to distribute the apps.
