If you do not register it with thesearch engines, it does not matter how beautiful your site, And you are selling your site short and eliminating a lot of visitors to your site. The professionals saying that "if you build it, they will come" does not apply on the Internet. It is more like "if they don't know about it, they won't come".It must be listed on top 20 for you to get visitors out of it, as listing your site is not enough. You don't want your site to be the one millionth site indexed on a particular search. You must know the secrets of how the search engines works, for your site to be listed on top of the search engines.