If you want to register a domain to make certain that nobody else is going to take it, but you have not developed the site for it yet, you may park it. It's a service that registrar companies offer when a domain address is not connected to any web or e-mail hosting service. In this way, you'll be able to protect a brand name, for instance, and you'll own the domain address in question even though it won't load any content. If you want, you can pick some default template that the registrar offers, such as For Sale or Under Construction, or you can direct the domain to an alternative web address. The second option is extremely helpful in case you own a few domain names, but you want every one of them to open the same website. As an example, you can 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 is going to be redirected to it.