There are many ways to forward website visitors from one domain/website to another. The so-called URL redirection is commonly favored. In contrast to parking a domain, a URL forwarding can be done only if the domain in question is hosted. What this means essentially is that you may still open any content if you have a direct link to it and you can set up e-mail addresses or subdomains and use them. This kind of feature has lots of practical uses - if you decide to switch your domain address, you may redirect the traffic, but the e-mails with the old one shall still be active if you are communicating with customers or partners. When you have 2 very similar websites and you intend to rebuild one of them, you may redirect the site visitors to the other site in order to prevent losing potential customers, while you'll still be able to access the administrator area for the first website and develop it.