Directory Submissions - Yahoo! - DMOZ (The Open Directory - ODP) - Zeal
Newer generation spider-based search engines employ complex mathematical algorithms in an attempt to assess a website's theme. By reading visible
and invisible text found on a website and on other website pages that link to it, search engines are able to determine which words and phrases represent a website's theme. Where as website optimization helps the search engines establish an intended theme, determining which keywords are best suited is an essential starting point for any website optimization campaign.