Firstly, let me say welcome to DomainingSource

As for your question:
Multiple domains are boughten so people can either:
A.) Develope the site
B.) Develope then SELL the site
C.) Sell the domain
There are many premium, non register domains out ther, you can register one for $10, then turn around and immediatley sell it for $50. It's just all part of the domaining game. But don't feel bad, everyone starts out here

If there's something I can help you out with further, PM me and let me know
