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/20110106190211/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/illegaloperation
An Illegal Operation is a message that will be flashed up on your computer when there has been an error in a program you are trying to run. The most likely cause of these is bug in the program you are using.