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/20110808162611/http://www.searchengineoptimising.com:80/glossary/seo-glossary-of-terms/keyworddensity
Keyword density is the number of times keywords are used in a body of text. The average density of keywords is 2-3%, although sometimes it can be as high as 6%.
SEO Resources 
