I would see this as a move towards 'enterprise' (yes I know people here hate that word), but look at the url... $9/app/month means that it doesn't really make

I would see this as a move towards 'enterprise' (yes I know people here hate that word), but look at the url... $9/app/month means that it doesn't really make sense for tiny hobby sites any more: it is comparable in cost to a tiny VPS host, and my VPS currently handles 19 domains. The place where GAE makes most sense is the 'line of business' app that is basically just a set of forms backed by a database. Those kind of apps don't have any complex things going on that are going to require integration with existing code or custom server configuration: both places where the current crop of PaaS offerings risky right now. Line of business apps currently require lots of manual labour from DBAs and IS, so paying $9/month to run the HR application is going to be a pretty good deal.