After submitting your site to the search engines, a robot sent by each of the search engines will visit your site to index your page.
Every search engine has a different method of ranking pages.
Some will look at META TAGS, some won't. There are many things that the search engines look at when ranking your pages, and the search engines are very secretive about what these are. Search engine optimization means optimizing the website for the best possible positioning based on the page's keywords and description. CDG Now Free Search Engines Submition CDG announces the new Free Submit Web site Promotion tool.