A lot of companies advertise that they will submit your site to 500+ search engines. Should you go for it?
You should be extremely weary of any company that claims to submit your site to hundreds of search engines. There are really only four major players in the search engine marketplace:
Submitting your site to these search engines really isn’t even necessary! All of these search engines are fully automated search engines that will find your site, provided that you do not block them and that you have a link to your site from another page in their index. It is recommended that you have a sitemap for your site that you submit to these search engines, but again, this really isn’t necessary.
Search Engine Optimization (SEO) is not about submitting your site to the search engines, but about optimizing the pages on your site for relevant keywords.