Reading Materials about Search Engines Presentation

[Philip Johnson <johnson@hawaii.edu>]

Question 1. What is the difference between search engines and directory
services?

Reference:
http://www.searchenginewatch.com/webmasters/work.html
http://www.library.ucsb.edu/untangle/eagan.html

Question 2. What are the spiders, crawlers, and web robot/agent?
http://www8.zdnet.com/pcmag/issues/1513/pcmg0045.htm
Additional question: Please visit http://www.whatis.com and search those
terms and read the articles.

Question 3: How does search engine rank web pages?
http://www.searchenginewatch.com/webmasters/rank.html
http://www.marketwebbiz.com/html/engine-ranking.shtml