Join us Sept. 14-18 in Miami to connect with top publishing leaders
According to a new report by MediaMind, conventional audience measurement metrics that do not adjust for user cookie deletion overestimate the number of unique users by up to threefold. MediaMind’s method of measurement, the adjusted unique, divides the number of total impressions by the average frequency of cookie deletion. The study was based on 26 billion impressions served in the U.S. and Europe from January to December 2010.

More in Media
Perplexity blocks Time’s ads served to AI agents, calling them ‘deceptive’
Perplexity has blocked Time’s markdown agent ads from influencing its AI system.
Meet the interior design creator who made a reluctant pivot that paid off
Julie Sousa had an interior design company and viral content, but after hiring a manager, was pressured to pivot. It worked.
Why brands like Gap Inc. and Staples are inviting their employees to be creators
Companies are scrambling for creators. Turns out they already employ them.