Facebook are atrocious. I read this one piece on how someone exploited the newest update to the algorithm by getting people to comment on her vid and it just stayed at teh top of everyones feed for 5 days and they were sick of her...
facebook, not a very ethical company, data protection laws, and laws in general, really need to catch up with tech

Worse when you've it for work - at least in life you can switch it off now and then