A parked domain name is one that's taken, yet it is not linked to another service - web or e-mail hosting. Essentially, this type of domain address won't load any real content if you type it in a browser, but no one can take it as you have already registered it and you are its owner. The main advantage of obtaining a domain name and parking it afterwards is the fact that you are able to keep it and not worry that someone else might register it meanwhile if, for example, the site for it is not ready yet. You may set a temporary Under Construction webpage for a parked domain address while you are working on the site, or direct it to some other web address - temporarily or permanently. The latter option can be used when you have already registered domain.com, for example, and you acquire domain.net and domain.org, in order to protect a brand name or a trademark. In cases like this, the .net and .org domains can be parked and directed to the .com as you do not need separate websites for them.