However, the tool is often criticized for only being able to deliver data on a limited number of websites. This is due to how Quantcast works: website operators first need to set up a data collection feed on their website so that Quantcast can collect data and estimate traffic from then on. If a page doesn’t work, the tool cannot display matching results. Because of this, Quantcast only really offers data on large, well-known websites.
In other words, actively developing your own media allows you to be in much better control of what results come up in the search results pages and for which keywords. When flawlessly implemented, this concept allows you to dominate entire search results pages, thus harvesting most of the search traffic for the chosen search terms, leaving nothing to your competition.
Web traffic is measured to see the popularity of websites and individual pages or sections within a site. This can be done by viewing the traffic statistics found in the web server log file, an automatically generated list of all the pages served. A hit is generated when any file is served. The page itself is considered a file, but images are also files, thus a page with 5 images could generate 6 hits (the 5 images and the page itself). A page view is generated when a visitor requests any page within the website – a visitor will always generate at least one page view (the main page) but could generate many more. Tracking applications external to the website can record traffic by inserting a small piece of HTML code in every page of the website.