There are reports [1] that a bunch of companies like "College Humor" were convinced to switch to producing native video for facebook (instead of directing users to their own sites) on the basis of bullshit metrics from facebook, and had an extremely bad time as a result, with some companies going bankrupt.
Something like counting an autoplaying video that ran for 3 seconds as a 'view' IIRC
[1] https://twitter.com/adamconover/status/1183209875859333120