If you wish to register a domain to make certain that nobody else will take it, however, you have not developed the website for it yet, you may park it. This is a feature that registrar companies offer if a domain address is not linked to any web or e-mail hosting service. In this way, you can protect a brand name, for example, and you'll own the domain in question although it will not open any content. If you would like, you can select some default template that the registrar provides, like For Sale or Under Construction, or you can direct the domain to an alternative web address. The second option is extremely helpful if you own a number of domains, but you want each and every one of them to open the same website. For example, you may 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 address only and the traffic to the other ones is going to be redirected to it.