Seems to be popping up on different social media, people doing a New Years clean up of their friends list/followers and then posting a message asking people to like/comment to stay on their friend list.
Why?! I never like or comment and yet they’re still there.
Do they do it for attention and don’t actually unfriend anyone? Then a few hours later you see a ‘congrats you made the cut’ post. 
If you are one for these people, please can you explain why you do it? Surely it would be better to just quietly unfriend/unfollow anyone you no longer want on your feed?