zlacker

And to add to that (personal experience):

If you buy everything from one hand at once (server space, domain, associated email), make sure you have a way of changing provider and keep domain and emails without it being a hassle.

>>riidom+(OP)
Word. If you have regular backups, and if some downtime is not really a problem, it might be fine to use web server hosting, e-mail (and in extreme cases even DNS hosting), from some fly-by-night el cheapo provider. But your domain name registrar? Pick them carefully, don’t skimp, and make sure they have good support. Because when things go pear-shaped, you really want to be able to actually talk to someone to change your web server or e-mail DNS records (or even DNS servers) to somewhere else.

Full disclosure: I work at such a registrar. No, you’re probably not in our target market.