How Do They Track You? Let Us Count the Ways
In my article in Monday’s Times, “To Aim Ads, Web Is Keeping Closer Eye on What You Click,” I worked with comScore to develop a new measure for Web companies: how much data they can collect from users.
On the Internet, companies are typically ranked by how many different people visit their sites in a given month. And when Microsoft announced its $41 billion bid for Yahoo, comScore and Nielsen Online promptly put out estimates counting how many people would be in the merged company’s total audience.




