The open source project:
http://code.google.com/p/scalr/The cloud hosted option:
https://scalr.net/login.phpI just learned about this gem of an open source project earlier today when I joined a Silicon Valley cloud computing Meetup. This is definitely something perks and nutballs should look at for obvious reasons. The following diagram should pique your interest:

Check out the
screencast. Sure, it's hard to out impress the 3Teras of the world, but you don't even need to use their cloud service. You can grab the project, build it and host it on your own farms

All you need is an Amazon web services account and presto, the promise of cloud elasticity is yours. If you already have a home for the LAMP stack (perk/nuts) then host it there if you wish.
Even if EC2 is not something you would choose to employ, those who would consider this architectural path would benefit from an incredibly agile business model. And of course since it's open source I'm seriously tempted to roll my sleeves up and contribute to the project. Talk about ADD

I can't even stick with my Python training long enough to become a solid Ubuntu contributor

Actually I'll keep that moving along as well. But this project describes that very thing I've been hunting for since cloud computing infected my soul. Good work Sebastion.
Enjoy!