His unique formula for establishing the most appropriate
keywords for a site (called the Keyword Effectiveness Index
or KEI) has been used by WordTracker, the most popular keyword
research tool on the Internet. This formula is also used by
many other search engine optimization companies for establishing
the most appropriate keywords for their clients' sites.
Sumantra developed LinkExplore
in order to help website owners know the secret tactics and
techniques that he uses in order to place his clients' sites
at the top of Google, Yahoo, MSN, AOL and the other search engines.