A parked domain address is one that is taken, but it's not associated with some other service - web or e-mail hosting. To put it differently, this type of domain name will not open any actual content in case you type it within a web browser, but nobody can take it as you've already registered it and you are its owner. The advantage of getting a domain name and parking it afterwards is the fact that you’ll be able to keep it and not worry that someone else could possibly register it in the meantime if, for example, the site for it is not ready yet. You can create a short-term Under Construction webpage for a parked domain name while you're working on the web site, or forward it to some other web address - temporarily or permanently. The latter option can be used if 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 such a case, the .net and .org domain addresses can be parked and forwarded to the .com since you do not need separate sites for them.