If you'd like to register a domain name to ensure that nobody else is going to take it, however, you have not built the web site for it yet, you could park it. This is a service that registrar companies offer whenever a domain name is not connected to any web or email hosting service. In this way, you can protect a brand name, for instance, and you will own the domain in question although it will not open any content. If you want, you can select some standard template that the registrar provides, such as For Sale or Under Construction, you can also forward the domain to a different web address. Your second option is extremely helpful if you own a few domain names, but you want all of them to open the same site. As an example, you could register domain.net and domain.org, then park them and direct them to domain.com. In this example, you'll need hosting for the third domain address only and the traffic to the other ones will be redirected to it.