By submitting your website to hundreds of search engines, it means that you are getting coverage from every search engine where your site is being submitted. As most of recent search engines like Yahoo! and Google are smart and they automatically add websites without manually submitting them, but still, there are many other search engines that require manual search engine submission to list your website. Search engine submission is very helpful as there is a variety of search engines and visitors have multiple choices whether to use Google or other search engines to search their desired query.