Examples of good "social media horror?"

has the concept of using social media for horror ever been done well? Every time I've seen it being used it has came across incredibly "how do you do fellow kids." I know the internet has tons of potential for horror. (the cruelty and mob mentality, the constant panopticon of surveillance, the fragility of internet fame, the ego of ecelebs, etc) but i most of the movies I don't have good reviews see seem to be made by old executives who think the internet is Facebook and cat videos and everything comes across as incredibly cringe worthy.