Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110809004815/http://www.searchengineoptimising.com:80/glossary/seo-glossary-of-terms/documentstreams
A document stream is a burst of documents on a certain subject, usually news topics, and these must be indexed by search engines in order to stay up to date.
SEO Resources 
