A parked Internet domain is one that is taken, but it's not associated with another service - web or email hosting. Put simply, this type of domain name won't load any real content in case you type it in a web browser, but no one 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 the fact that you will be able to keep it and not stress that someone else might register it meanwhile if, for example, the website for it is not ready yet. You could set a short-term Under Construction webpage for a parked domain address while you're working on the web site, or forward it to another 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 this case, the .net and .org domain names can be parked and directed to the .com since you do not need separate sites for them.