There are various ways to forward visitors from one domain/website to another. The so-called URL redirection is often preferred. In contrast to parking a domain, a URL forwarding is possible only if the domain in question is hosted. What this means essentially is that you may still open any content in case you have a direct link to it and you can set up e-mail addresses or subdomains and use them. This sort of feature has many practical uses - if you want to switch your domain name, you could redirect the site visitors, but the emails with the old one will still be active in the event that you are making contact with customers or partners. If you have two identical sites and you need to rebuild one of them, you may forward the visitors to the other Internet site to avoid losing potential customers, while you shall still be able to access the admin area for the first website and develop it.