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/20110106180919/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/searchengine
A Search Engine is a program that is used to search and find files that are on a computer. Search engines have indexes that are constantly updated from which you can find the media content you need by entering particular criteria.