[This article is meant as a short tutorial for newbies to explain the basics how to register a domain name] del.icio.us has become the most popular social bookmarks manager in recent times. Many surfers are drawn to curiosity by the peculiar domain name del.icio.us. It was an ingenious way to register a domain name. I mean it is much better than getting delicious.com or delicious.net etc. A domain search reveals there are many such names and many more subject to domain name availability.
Now to solve the confusion of the del part. del is actually a subdomain of icio.us (Update: though some readers have pointed in comments that it del is a server of icio.us and not a subdomain). A subdomain is a domain that is part of a larger domain name. So the main site del.icio.us is hosted on the del server of the domain name icio.us