facebook boosting
You like and comment on your friend's stuff so they do the same to you. It's like you're both trying to be popular, even though you're not.
You comment 'This is amazing!' on their post. They like 100 of yours. Both of you are lying.
You boost each other so your posts show up on top. It's like you're both trying to be famous, even though you're not.
You like 20 of their stuff. They comment 'You’re so cool!' on yours. Both of you are faking it.