If you've ever thought about buying a vanity website address (e.g., registering a domain), like www.vanitywebsiteaddress.com, it's actually pretty easy.
There are many reputable companies, like GoDaddy.com, 1and1.com, and even Register.com, and disreputable companies, like Domain Registry of America and Web Listings Inc (who try to appear "official" and charge $35 per year), who will check and see if your proposed website name is available.
If it's available, it should cost you around $6 to $9 per year to register.
If it isn't available as a .com, it might be available as a .biz, .us, .org, etc., but to me, .com is still where it's at. If your name isn't available, you have two options: 1. contact the holder of the address and grab your wallet, or 2. choose a different name. And sometimes that name might be a unique spelling away, like Taddddd, instead of Tad (The extra "d's" are for determination).
And once you've found a name you like, jump on Facebook, Twitter and all of the other social media sites to grab it there as well.
Good luck, you vain devil, you.