A parked domain address is one which is taken, but it is not linked to another service - web or e-mail hosting. Essentially, such a domain address won't load any real content in case you type it inside a web browser, but no one else can take it as you've already registered it and you are its owner. The benefit of acquiring a domain and parking it afterwards is that you’ll be able to keep it and not stress that somebody else may register it meanwhile if, for example, the site for it is not ready yet. You can create a temporary Under Construction page for a parked domain address while you're working on your web site, or direct it to some other web address - temporarily or permanently. The second option can be employed when you have already registered domain.com, for instance, and you get domain.net and domain.org, in order to protect a brand name or a trademark. In this situation, the .net and .org domain names can be parked and directed to the .com since you don't need individual sites for them.