Actually Goolge and the GAE team are very much about app/data portability. They even sponsored our open source App Engine project AppScale (http://appscale.cs.u

Actually Goolge and the GAE team are very much about app/data portability. They even sponsored our open source App Engine project AppScale (http://appscale.cs.ucsb.edu/sponsors.html http://appscale.cs.ucsb.edu/sponsors.html) which lets users run their app on their own hardware or on EC2.