If you wish to register a domain to make sure that no one else will take it, but you haven't developed the web site for it yet, you could park it. That is a service that registrar companies provide if a domain address isn't linked to any web or e-mail hosting service. In this way, you are able to protect a brand name, for instance, and you'll own the domain in question although it will not load any content. If you want, you can choose some default template that the registrar offers, such as For Sale or Under Construction, alternatively you can forward the domain name to an alternative web address. Your second option is very helpful if 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 direct them to domain.com. In this example, you are going to need hosting for the third domain address only and the traffic to the other ones will be redirected to it.