Digging Deeper
The Problem with Web Measurement, Part 2
With all the web traffic numbers and metrics floating around -- page views, unique visitors, time spent, sessions -- it's a wonder that anyone can agree to a simple advertising sale on a website. Complicating matters is that the advertising world is used to traditional measurement services such as Nielsen's TV ratings that rely on usage by controlled panels of people. Online, those panel-based services can rarely gauge traffic on sites with less than 500,000 unique visitors per month.
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