The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Web wide crawl with initial seedlist and crawler configuration from October 2010
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110106224707/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/gigo
GIGO (Garbage In, Garbage Out) is a term used to describe the act of inputting incorrect data into a computer program, if you put something in that is of no use, you will get something useless in return.