We're moving. Goodbye Rackspace.
One potential reason not to move: Security.<p>A good friend deep in the security community once told me, off hand, that EC2 was "owned."  I didn't take this too seriously until another good friend, who has been working at Amazon for the past several years, told me that engineers at Amazon were generally forbidden from using AWS due to security concerns.<p>That much said, I still decided to use EC2/RDS/S3 to host the infrastructure of my latest startup.  It is just too convenient to walk away from.  Once it matters, I can move the critical stuff to dedicated servers.<p>EDIT: To clarify, I'm not suggesting that Amazon knows AWS is "owned" and offers it to others anyway.  I'm only noting that, for certain critical services, they themselves do not appear willing to take the risk.