Personally, I'm surprised this hasn't happened sooner.
I've noticed that lately, nothing could be posted without the next comment on any post being a smart alec answer. It would be different if it was relevant, but they're not.
It's fine to disagree with something, or anything, but at least justify it with some logic or reasoning.
I know it'll slow down some of the posts, but, if that's the way it has to be, then so be it.
I think it is unfortunate but necessary, the couple of people who don't like the board, and everyone knows who they are, have posted 3rd grade comments for the past couple of months.
I know some additional people who will post now with the signing in policy because they feel there will be more constructive debate vs. the childish banter a couple people kept posting.