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/20110106203757/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/listserv
Listserv is a program that is used to send out e-mails to a mailing list automatically. When a person subscribes they are added to the list, when they unsubscribe or report the e-mails as spam they often end up getting more e-mails.