User blog comment:DaNASCAT/Technical Update: January 20, 2016/@comment-24055022-20160121000903/@comment-126761-20160121113150

While I wouldn't rule it out, the responses above to cover the issues with it quite well - it's a very 'negative' action, which can bring down the mood. It would be a bit depressing to be the person that gets downvoted in threads, even if you're not doing anything 'wrong'.