I think this would me an absolute mess, I don't think they'll do it.
Companies wouldn't want the ability for customers to dislike them. Unmoderated, it could definitely facilitate cyber bullying, particularly with the younger generation.
Personally I think there's only room for negative post feedback on well moderated and managed discussion platforms such as independent forums where user behaviour can be influenced by mods and admins. The culture of the forum will then help to ensure negative post feedback will generally be used in a constructive way that contributes to the progression of the conversation and not used in a purely flippant or malicious manner.
@Kier's stance 4 years ago was that there will never be a dislike button as part of the XF core.
If you agree that there shouldn't be a dislike button, what about other post feedback buttons?
Luke Forman's post ratings add on is one of the most popular resources here. Users like being able to provide feedback to a user about just their post purely for the benefit of that user, without having to clutter the thread and have their view seen by everyone else following the thread in real time.
Do you think the prevalence of online discussion platforms and their use by every single person in their daily life, including the less tech savvy public, means it's time for progression on this front for all web based discussion software?
With web based discussion threads appearing in so many aspects of peoples lives now, work software, school software, social Facebook interaction, hobby forums we're all reading more threads than ever. Is this kind of feedback going to be necessary to enable us to digest all these threads quicker and more efficiently, as it would result in fewer, but better quality posts raising the quality and reducing the length of the threads?
Or is a simple 'like' still the best core post feedback mechanism?