My latest bit of playing around, er, investigation, is with Amazon's EC2 service. I'm thinking of using it for website hosting. I don't expect the website will get much use, but I'm hoping that I can just run up new instances if I need them, and use the simple DNS round robin load balancing to share the load.
From my research there are better ways to load balance, but this should be enough at the moment. Now I just have to pick a suitable distribution and try out my Catalyst application on it.