Web Robots are programs that traverse the Web automatically. Some people call them Web Wanderers, Crawlers, or Spiders. These pages have further information about these Web Robots: The Web Robots FAQ; Robots Exclusion; A List of Robots; The Robots Mailing List; Articles and Papers; and Related Sites

This study try to estimate the size of the indexable web, and the overlap between the engine's indexes, as at the end of February 2005

This article covers search engine submission, placement and marketing issues. It explains how search engines find and rank web pages, with an emphasis on what webmasters can do to improve their search engine rankings by properly submitting, using better page design, HTML META tags, and other tips

NetRatings provides worldwide web site ratings based on a sample of over 225,000 individuals in 26 countries. These web surfers have real-time meters on their computers which monitor the sites they visit. This metered information is compiled to produce NetRatings results, such as the most popular search sites in the United States.

The aim with this web site is to establish a standard for search engine terminology by creating an authorative glossary of search engine terms. Terms included: above the fold, Boolean search, click through rate, deep linking, doorway page, full-text search engine, hand submission, and more.

The latest comScore Media Metrix ratings for search engines, showing which search engines are most popular, based on search volume.

Directory of European search resources to enable the sourcing of websites in Europe.

The invisible web is the part of the web that most search engines don't reach. It includes the contents of research libraries, government databases, and so on.

This page presents figures showing popular search-oriented web site networks in Europe, based on figures provided by Nielsen//NetRatings.

This guide gives tips on getting a new web site noticed. It includes tips on getting links to a site, low-cost advertising, and more.