A parked Internet domain is one that is taken, but it is not associated with some other service - web or e mail hosting. In other words, such a domain won't open any real content when you type it within a browser, but no one else can take it as you have already registered it and you are its owner. The advantage of acquiring a domain name and parking it afterwards is the fact that you are able to keep it and not stress that someone else might register it meanwhile if, for example, the site for it is not ready yet. You are able to set a temporary Under Construction page for a parked domain address while you are working on your web site, or direct it to another web address - temporarily or permanently. The second option can be used when you have already registered domain.com, for example, and you acquire domain.net and domain.org, so as to protect a brand name or a trademark. In such a case, the .net and .org domain addresses can be parked and directed to the .com because you don't need different sites for them.