Mark Zuckerberg recently announced that Facebook is working on a "Dislike" button during a Q&A at Facebook's headquarters. The social network didn't immediately design the button because it didn't want it to become a Reddit-style system of upvoting and downvoting
Source: Business Insider
I think people have asked about the dislike button for many years. Today is a special day because today is the day I can say we’re working on it and shipping it - Mark Zuckerberg
Source: Business Insider