• SEOmozBlog, Tuesday, July 7, 2009 4:30 PM

Rand Fishkin provides insight on how search engines determine the pages to crawl, the frequency in which they crawl them, and the type of information they look for on the site. Web sites don't rank in search queries unless the engines crawl and index the site.

Some of the factors that influence indexing include unique content, domain importance, raw link juice, external link and search, and traffic volume, Fishkin says. Search engines look for frequent updates and new information on sites, link structure and new feeds to determine relevance. He says these factors can determine whether Google indexes a page in the main index or drops it from the index completely.

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