If you'd like to register a domain name to make certain that nobody else will take it, however, you haven't created the site for it yet, you could park it. It's a service that registrar companies offer whenever a domain name isn't linked to any web or email hosting service. In this way, you are able to protect a brand name, for instance, and you will own the domain name in question although it won't load any content. If you want, you can choose some standard template that the registrar offers, like For Sale or Under Construction, alternatively you can forward the domain to another web address. The second option is very useful if you own a number of domain names, but you want each and every one of them to open the same site. For instance, 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 only and the traffic to the other ones will be redirected to it.
