There are two separate services you need for a functioning web site - a domain and a web hosting plan for it. Each time you type the domain name in your browser, you see the content that is uploaded in the hosting account, but if that domain name is not linked to such an account or to an e-mail service, it is parked. To put it differently, the Internet domain is registered and you're its owner, but it lacks content of its own. Rather, it can open either a pre-made “Under Construction / For Sale” Internet page from the registrar company, or it could be forwarded to some other URL of your choice. The main benefit of parking a domain address is that you can keep it and be sure that no one else is going to take it. In the meantime, it will not block a slot for a hosted domain name within your account. In addition, you can park domains if you have a .com, for example, and you register domain names with other extensions such as .net, .org or country-code ones to forward them to the main site so as to protect a brand name.