How to register just enough domains – Evan Prodromou's Blog

Have a personal domain, put a CMS behind it, use that for publishing static pages, use subdomains of it for standalone services, and register new domains only when you need to. I think this kind of strategy is inherent in the idea of having “your own domain”, and a lot of people follow it to a greater or lesser degree, but I wanted to spell it out fully to make it clear to myself how I would deal with different circumstances.