A parked domain address is one that's taken, but it is not linked to some other service - web or email hosting. Essentially, this kind of domain address will not load any real content in case you type it in an Internet browser, but no one else 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 will be able to keep it and not stress that someone else might register it in the meantime if, for example, the site for it is not ready yet. You may set a short-term Under Construction webpage for a parked domain name while you're working on the site, or direct it to another web address - temporarily or permanently. The latter option can be used when you have already registered domain.com, for instance, and you acquire domain.net and domain.org, so as to protect a brand name or a trademark. In this situation, the .net and .org domain addresses can be parked and forwarded to the .com as you do not need individual websites for them.