One of their favorite targets are ticket sites, as bots will rush to snatch up tickets for re-sellers to offer at inflated prices. Government targets are also common, especially voter registration pages, because why make a strong case for your candidate when you can just fuck over the other guy? And then, of course, there are the fake views.
In November 2018, eight people were accused of bilking advertisers out of $36 million by running "empty websites" for bots. Sellers were made to think that their ads were racking up views on big sites like The Economist, but they were in truth only rattling around server farms. At its peak, the operation was using over a million IP addresses and a grab bag of tricks, like fake mouse movements, to make the ad impressions look human. Schemes like that are one of many reasons the internet economy is a shambling mess, but let's move on to Instagram.