The Internet Archive (IA) is a non-profit effort to preserve Internet sites and other digital media and make them available online. IA’s spiders regularly crawl the World Wide Web, making copies of web pages and storing them permanently in an enormous digital archive. Using the “Wayback Machine”, one of the Archive’s popular services, users can input the address of a web page and call up a series of dated copies, allowing them to see what the page contained at the times it was accessed by the IA spider.
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