Submission to Search Engine and website promotion is a subject that you can never stop learning.

The Search Engine or Directory goals is to give their visitors the best MATCH CONTENTS from the sites in the category or keyword matches which they are searching.

Each Search Enginee has its own set of criteria for ranking sites and always keep this a secret for themselves.

The rules will keep changing as to prevent anyone from matching their FORMULA and thus the ranking of sites become useless.

The term Search Engine is often used to refer to both the Spidering and Human powered directories.  Search Engine like www.google.com use Spidering Engines which is an automated computer program to find your site and crawl into your site for contents.  At your site, they will read things like your page file names, title, meta tages and the text of your site.  All this information will then be reported back to the Search Engine's database.  The Search Engine are program by the Computer Engineer to do complex mathematical equations, called alogrithms to figure out how to RANK your site RELEVANCY to certain search terms.

Spamming is the word used if you try to artifically boost your site ranking.  When you SPAM the Search Engine, your site will be dropped or BANNED from the Search Engine database.

Web site Directories on the other hand are a list of sites that are check by real live human beings who will actually visit your site.  Only the Best Sites will be index into the Directories Categories.  Submitting your site to Directories does not mean that it will be indexed.  It will also take quite a while for those successful site that are accepted into the Directores to appear.  An example of a top directories is www.yahoo.com and for no apparent reason, many Good Sites may never appear in thier directories.