A parked domain name is one that is taken, however it's not associated with some other service - web or email hosting. To put it differently, this type of domain won't load any actual content when you type it within an Internet browser, but nobody can take it as you've already registered it and you are its owner. The best thing about acquiring a domain and parking it afterwards is that you are able to keep it and not stress that somebody else might register it in the meantime if, for instance, the website for it is not ready yet. You are able to create a short-term Under Construction page for a parked Internet domain while you are working on your website, 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 get domain.net and domain.org, in order to protect a brand name or a trademark. In cases like this, the .net and .org domain addresses can be parked and directed to the .com because you don't need different sites for them.