Posted on | November 12, 2009 | No CommentsThe search engine spider returns to the website from time to time to tally its existing information with the latest and updates its database after going through the current website all over again. The frequency with which a search engine spider returns to your website is determine by the Search Engineâ€™s moderators(who are real humans). Spiders are really quick at what they do. Googleâ€™s spiders known to be the most powerful ones can index upto a 100 pages each second! When you enter your search keywords into a search engine, it actually searches through its own database of content it has gathered, not through the web. Now thatâ€™s how search engines work and how search engine spiders play an extremely vital role in the functioning of the search engines.