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/20110106201322/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/cd-r
CD-R (Compact Disk Recordable) is a CD which is able to have data written to it. A CD burner must be used for this. Although they can hold audio data they can also be used to store other data such as Power Point presentations and Word documents.