The Best Web Hosting Company
BlueFur.com is in my opinion the best web hosting company around. Their Unix hosting plans cannot be beat if you are just starting to run a couple sites. Some people opt to run their own servers in their own house - but it isn't worth it. First of all, you are going to pay more for power to run your server 24/7 than the $6.95 you pay at BlueFur. You will also not have the guaranteed uptime (redundant power and network), or network speed. In short, the small monthly fee is well worth it.
Why I Love My Webhost
Just look at that picture. Even on my "mini" account, I can run up to 10,000 different websites off one hosting package. I can have 10,000 MySql databases as well. I don't know of any other host that offers basically limitless add on domains and databases.
The freedom of having as many websites as I can works perfectly for me as I'm always building or testing something; I have to have a host that can give me the flexibility that BlueFur provides.