Facebook like button something that’s just so simple about the ‘like’ button’ ... but giving people more ways of expressing more emotions would be powerful. We need to figure out the right way to do it so it ends up being a force for good, not a force for bad and demeaning the posts that people are putting out there." While suggesting the comment field for users who feel the like button isn't appropriate, he said that Facebook had "no plans" to introduce a dislike button. In a new Q&A in September 2015, Zuckerberg said that Facebook was working on an "empathy button",
Facebook were mobile users, 1.71 billion users in July 2016, 1.94 billion users in March 2017, and ultimately 2 billion users in June 2017. Early in 2015, it was reported that teenagers preferred competing web sites such as Instagram and Snapchat. The estimated number of teens leaving Facebook was a million per year. In November 2015, after skepticism about the accuracy of its "monthly active users" measurement, Facebook changed its definition of an "active user", now defining it as a logged-in member who visits the Facebook site through the web browser or mobile app, or uses the Facebook Messenger app, in