A lot of comments are rushing to dismiss the entire concept of advertising as ineffective, but they’re missing the point of these Tweets.
One of Uber’s advertising partners created numerous apps that did things like auto-click on their ads and install apps in the background, collecting the commission for themselves on customers who didn’t actually click the ad or intentionally install the app.
They discovered it when they turned off those ads and didn’t see a drop in signups, which is something that normally happens when they turn of legitimate ads.