If you wish to register a domain to ensure that no one else will take it, but you haven't built the web site for it yet, you could park it. That is a feature that registrar companies offer if a domain address is not linked to any web or e-mail hosting service. This way, you are able to protect a brand name, for example, and you'll own the domain address in question although it will not open any content. If you want, you can select some standard template that the registrar provides, like For Sale or Under Construction, alternatively you can direct the domain to a new web address. The second option is very helpful if you own a few domain names, but you want each and every one of them to open the same site. As an illustration, you may 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 only and the traffic to the other ones will be redirected to it.