A parked domain address is one which is taken, however it's not linked to some other service - web or e-mail hosting. Essentially, this type of domain name will not load any actual content in case you type it in an Internet browser, but no one can take it as you have already registered it and you are its owner. The best thing about getting a domain and parking it afterwards is the fact that you’ll be able to keep it and not stress that someone else might register it in the meantime if, for example, the website for it is not ready yet. You could create a short-term Under Construction website page for a parked domain name while you're working on the website, 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 instance, and you get domain.net and domain.org, in order to protect a brand name or a trademark. In this case, the .net and .org domains can be parked and forwarded to the .com because you do not need individual sites for them.