Understand the tough task of ranking search engines from those who've undertaken major surveys of them. By mapping and analyzing how pages link to each other, search engines have been able to make remarkable improvements in their results. Discover how links have been leveraged for the greater good. But fear not, because it can mean better results. Learn how search engines measure what we click on in their listings in order to discover the best of the web.
Some search engines outsource the job of gathering listings.
They may even use two or three different partners. But if anyone can contract out, how do you make your service unique. Find out how some services work to be more than the sum of their parts. Cataloging the Web Librarians catalog books by subject, and web users seem receptive to having Internet content similarly organized. But there's no Dewey Decimal System for the web.