WSJ: "Activity on Twitter’s ad manager, a subdomain of Twitter’s ad platform sites that specifically hosts those creating or monitoring ad campaigns, declined nearly 74% in October from a year earlier, according to the firm’s data. In November, visits fell 85% on the same basis—the largest ad traffic decline since Twitter’s change of hands."

https://www.wsj.com/articles/twitters-advertising-truth-hurts-11670706720?st=nnhqrlul0knuohv