That's too bad. It seemed to be going strong for more than half a decade. I was bummed when SimpleGeo, also cofounded by Joe Stump, got shut down after being acquired by Urban Airship [1] and glad to see Sprintly thriving. I think both can be counted as successes, but it's too bad that both no longer exist. I look forward to see what Joe Stump does next!

1: https://techcrunch.com/2012/01/13/with-simplegeos-shutdown-i...