A parked domain is one that's taken, but it is not connected to any other service - web or e-mail hosting. Put simply, this type of domain address won't load any actual content in case you type it inside a web browser, but nobody can take it as you've already registered it and you are its owner. The best thing about obtaining a domain and parking it afterwards is the fact that you are able to keep it and not stress that somebody else might register it in the meantime if, for example, the website for it is not ready yet. You may set a temporary Under Construction webpage for a parked domain while you are working on the site, or forward it to another web address - temporarily or permanently. The latter option can be employed if you have already registered domain.com, for example, and you get domain.net and domain.org, so that you can 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 individual sites for them.