If you wish to register a domain name to ensure that nobody else is going to take it, but you have not developed the web site for it yet, you can park it. It's a service that registrar companies offer if a domain isn't linked to any web or email hosting service. This way, you'll be able to protect a brand name, for instance, and you'll own the domain in question although it won't open any content. If you want, you may choose some standard template that the registrar provides, such as For Sale or Under Construction, alternatively you can forward the domain name to a different web address. Your second option is very useful if you own a few domain names, but you want each and every one of them to open the same site. For example, you can register domain.net and domain.org, then park them and forward them to domain.com. In this example, you're going to need hosting for the third domain name only and the traffic to the other ones is going to be redirected to it.