People who reply with a laughing emoji on every topic that is posted on social media? What do you call them?

Question

Are they trolling or something? 

Update:

@ Anonymous...

You find an ad about Southwest airlines funny? 

Answer 1

No there just Expressing how they feel about the Post 

Answer 2

I call them people who found the post funny 

Edit: No, but maybe they did. Humour is subjective. But I did find your question funny 😂