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
Time has started serving ads to AI agents
Time is selling ads targeting AI bots, betting that markdown pages will make its content (and advertisers) more visible in AI search.
Media Briefing: Threatening to quit Google’s crawlers is just publishers’ new hope
Bold Call: Google’s AI era is fueling fresh calls for publishers to cut off access to their content, but dependence on search still holds most back.
Kai Cenat’s Streamer U was a ‘masterclass’ for brands looking to tap content creators
The creator bootcamp brought in big brand partnerships and big engagement metrics, which could bring more brands to the streaming sponsorship table.