A parked domain is one that is taken, yet it is not connected to some other service - web or email hosting. Put simply, such a domain name will not open any real content if you type it in a web browser, but nobody else can take it as you've already registered it and you are its owner. The advantage of obtaining a domain name and parking it afterwards is that you’re able to keep it and not worry that somebody else could possibly register it in the meantime if, for example, the website for it is not ready yet. You may create a temporary Under Construction page for a parked domain address while you're working on the site, or direct 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 acquire domain.net and domain.org, so that you can protect a brand name or a trademark. In this situation, the .net and .org domain names can be parked and forwarded to the .com because you do not need separate websites for them.