It is a myth that submitting hundreds of search engines makes any difference in the search engine rankings. If you’re marketing with us, when your site goes live we submit it, as a courtesy, to four major engines: Google, Yahoo, MSN, and DMOZ. There are other smaller engines that you can submit it to, but these four account for over 90% of the search volume on the internet so they are the only ones we bother with. Aggressively re-submitting your site to any of them also makes no difference; one time is all they need to include your site in their indexes. Multiple re-submissions can actually get your site blacklisted from the engines if done to an extreme.