Uber instructs ad buys to block all ads on breitbart, but ads still appear regularly. Uber identifies agencies that are responsible and stops all advertising bu

Uber instructs ad buys to block all ads on breitbart, but ads still appear regularly. Uber identifies agencies that are responsible and stops all advertising buys with them. It amounts to 10% of their ad budget, no change in new users is detected despite 10% drop in ad spend, about 15M. Edit: oops didn't finish the whole thread. Next uber turns of 2/3 of the ads. 100M. Still no effect.