A parked Internet domain is one which is taken, but it is not associated with some other service - web or email hosting. Basically, such a domain name won't load any actual content when you type it inside a browser, but nobody else can take it as you've already registered it and you are its owner. The advantage of getting a domain and parking it afterwards is that you can keep it and not worry that somebody else could possibly register it in the meantime if, for instance, the site for it is not ready yet. You may set a temporary Under Construction website page for a parked Internet domain while you are working on the website, or direct it to some other web address - temporarily or permanently. The second option can be used when you have already registered domain.com, for instance, and you acquire domain.net and domain.org, so that you can protect a brand name or a trademark. In this situation, the .net and .org domain names can be parked and forwarded to the .com as you don't need different sites for them.