Another example to add for "shady", for a long time Netflix used to push shows you'd watched to the end in your "continue watching" show to prompt you to watch

Another example to add for "shady", for a long time Netflix used to push shows you'd watched to the end in your "continue watching" show to prompt you to watch them again, which could easily be mistaken for "the show actually has new episodes". They did fix that though, i think.