I use everything Rackspace Cloud offers: 1. Cloud Sites - managed cloud hosting. Code it and load it and it scales automatically - storage, databases, the wor

I use everything Rackspace Cloud offers: 1. Cloud Sites - managed cloud hosting. Code it and load it and it scales automatically - storage, databases, the works. They have clusters for PHP, MySQL, .NET, MSSQL, SSL, and you can even run .NET and PHP in the same folder, and they can access the same databases (great for forum migrations!) 2. Cloud Servers - it's run on the same platform as Slicehost, in the same datacenter. Can't beat the price at pennies per hour to start, and you can resize servers on the fly. 3 Cloud Files - similar to S3, with built in Limelight CDN capability. I use it for static hosting for all of my sites. For the same price as S3, you get Limelight's footprint of edge servers. Plus, when you're ready to grow, with Rackspace you can tie your cloud setup in with their dedicated servers.