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/20110808160815/http://www.searchengineoptimising.com:80/glossary/seo-glossary-of-terms/costperclickc-p-c28cpc29
This is the cost of an advertising campaign divided by the number of clicks the ads got from unique visitors to the site. The higher the number of clicks the better the advertisements were.
SEO Resources 
