Well, domain names are no problem for me

I have been using the same name for my games for... 3 years now. This can only work because I usually take down a game when a new one is started/completed.
@sanland: I would disagree here. If you aren't sure you can finish a game, then why not start it on your local machine and when you see that you made progress that is worth putting more energy and time into, then it's time to register a domain.
Before that, I would say it's a waste of money.