In related news, there were 654 million "Great post!" comments published in 2015.... ;-)

It'd be interesting to find out how many were "authority comments", where they actually added something to a post/discussion, instead of just being the standard, "I agree", or "Great post".

Either by time spent commenting, or word/character count, etc.

Any thoughts on this happening? I wonder if The Coral Project could do something like this?