How do organic search listings work?
A spider or crawler which is a component of a SE gathers listings by automatically "crawling" the web
The spider follows links to web pages, makes copies of the pages and stores them in the SE’s index
Based on this data, the SE then indexes the pages and ranks the websites
Major SEs that index pages using spiders: Google, Altavista, Msn, Aol, lycos
“Spiders read only text, nothing else”