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/20110106212936/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/ppga
PPGA (Plastic Pin Grid Array) is an Inter Celeron used processor design which allows the heat created by the processor to be quickly dispelled. This in turn prevents your computer from over heating.