A parked domain address is one which is taken, but it's not connected to any other service - web or e mail hosting. Put simply, such a domain address won't open any real content when you type it inside a web browser, but nobody else can take it as you have already registered it and you are its owner. The advantage of getting a domain and parking it afterwards is that you are able to keep it and not stress that someone else might register it in the meantime if, for example, the website for it is not ready yet. You are able to set a short-term Under Construction webpage for a parked domain while you are working on your site, or forward 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 separate websites for them.