There are a lot of ways to redirect website visitors from one domain/website to another. The so-called URL redirection is frequently preferred. In contrast to parking a domain, a URL redirection can be done only if the domain in question is hosted. What this means basically is that you can still open any content in case you have a direct link to it and you could create e-mail addresses or subdomains and use them. This kind of function has several practical uses - if you decide to switch your domain address, you may redirect the visitors, but the e-mails with the old one will still be active if you are communicating with customers or partners. When you have 2 very similar websites and you need to rebuild one of them, you could forward the visitors to the other website to avoid losing potential clients, while you'll still be able to access the admin area for the first site and work on it.