A parked domain address is one which is taken, but it is not associated with some other service - web or e mail hosting. Essentially, such a domain name will not load any real content if you type it within a browser, but nobody can take it as you've already registered it and you are its owner. The main advantage of obtaining a domain name and parking it afterwards is the fact that you’ll be able to keep it and not stress that someone else could possibly register it meanwhile if, for instance, the website for it is not ready yet. You can create a temporary Under Construction page for a parked domain address while you're working on your site, or forward it to another web address - temporarily or permanently. The second option can be employed when you have already registered domain.com, for instance, and you acquire domain.net and domain.org, so as to protect a brand name or a trademark. In this case, the .net and .org domain addresses can be parked and directed to the .com since you do not need different websites for them.