Join us Sept. 14-16 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
Media Briefing: Ads for AI agents have a measurement problem
A wave of startups is racing to solve AI ad measurement and attribution as publishers and advertisers experiment with serving ads to agents.
The winners and losers of YouTube’s view count and monetization overhaul
YouTube is changing how it measure views and raising the bar for creators to get monetized. Who wins and who loses?
As AI automates everything, The Atlantic is building games by hand
The Atlantic is bucking the AI automation trend with a new trivia game handcrafted by “Jeopardy!” champion and senior editor Drew Goins.