Yay or nay?
It would be convenient for those who agree or disagree with a post but he/she is too tired/lazy/busy to type out a reply(and those who read but don't post), so that's where Thumbs Up Thumbs Down(or anything else you can come up with i.e. Star Rating) comes into play but what's more important is it hard to implement? Everyone can get involved in discussions easily this way too
It would be convenient for those who agree or disagree with a post but he/she is too tired/lazy/busy to type out a reply(and those who read but don't post), so that's where Thumbs Up Thumbs Down(or anything else you can come up with i.e. Star Rating) comes into play but what's more important is it hard to implement? Everyone can get involved in discussions easily this way too