from
The Free On-line Dictionary of Computing (8 July 2008)
vanity domain
<networking> A {domain} you register for the sole purpose of
having your own domain so you can have an easily remembered
{URL} and {e-mail} address. The domain is usually served
(often {vhost}ed) off someone else's machines.
This is as opposed to a domain you register because you have
machines of your own which are already on the Internet and
which you want to make addressable via something other than
{dot address}es.
Whereas vanity domains were almost unheard-of in 1980s, since
the invention and popularisation of the {Web} in the mid-1990s
and the desire for {URLs} which consist only of memorable
domain names (e.g., "http://pbs.org") for everything from
movies to car wax, vanity domains have come to be the rule
instead of the exception.
(1997-09-11)