[BIair]

I don't think cloud hosting will reach it's panacea until I can just upload a site or application, and be billed for what I use. No calculators, or intervention needed. Are weekends slow? It automatically drops a node. Get front page of Hacker News? Scales up automatically. Hosting that "just works".

[hueving]

The adding a node or dropping a node isn't really a problem. The problem is that most applications can't handle that type of environment. So until all applications are written in a way that can handle that, don't hold your breath.

[tonyarkles]

Have you looked at App Engine? It's been a few years since I've used it, but that's roughly how I remember it working.

[threeseed]

Amazon Elastic Beanstalk ?