A parked domain is one that is taken, yet it is not linked to any other service - web or email hosting. Basically, such a domain address will not load any real content when you type it in a web browser, but no one else can take it as you have already registered it and you are its owner. The main advantage of obtaining a domain and parking it afterwards is that you will be able to keep it and not stress that somebody else may register it in the meantime if, for instance, the website for it is not ready yet. You are able to create a short-term Under Construction webpage for a parked domain address while you are working on your site, or direct it to another web address - temporarily or permanently. The second option can be used when 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 cases like this, the .net and .org domain addresses can be parked and forwarded to the .com since you don't need different websites for them.