If you'd like to register a domain to make sure that nobody else will take it, but you haven't built the website for it yet, you may park it. It's a feature that registrar companies provide whenever a domain isn't linked to any web or e-mail hosting service. By doing this, you'll be able to protect a brand name, for instance, and you'll own the domain in question even though it will not open any content. If you would like, you may choose some default template that the registrar offers, such as For Sale or Under Construction, or you can forward the domain name to another web address. Your second option is very useful in case you own a few domains, but you want all of them to open the same website. As an illustration, 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 address only and the traffic to the other ones will be redirected to it.