If you'd like to register a domain to make sure that no one else is going to take it, but you have not created the web site for it yet, you could park it. That is a service that registrar companies offer if a domain name isn't linked to any web or e-mail hosting service. That way, you'll be able to protect a brand name, for instance, and you'll own the domain address in question although it won't load any content. If you'd like, you can select some default template that the registrar provides, like For Sale or Under Construction, you can also direct the domain name to an alternative web address. The second option is extremely helpful in case you own a few domains, 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 forward them to domain.com. In this example, you are going to need hosting for the third domain name only and the traffic to the other ones will be redirected to it.