Why is Facebook experimenting on this new feature?
A select few users noticed Thursday a downvote option appeared underneath comments on posts, next to the "like" and "reply" buttons. However, the social network denied that the new feature was a "dislike" button, which many Facebook users have requested.
"We are exploring a feature for people to give us feedback about comments on public page posts", said a Facebook spokesperson, adding that the test is only being done on a handful of Facebook accounts in the United States.
In the past, there was a huge demand for a dislike button on Facebook, which was speculated to sit alongside the like button. Many of them have shared their views on this feature on various social networks and microblogging sites. Zuckerberg's dialogue on the matter has been for the most part vague, and in 2014, when asked whether a dislike button would be a thing, he said, "We're thinking about it". Moreover, TechCrunch reports that the downvote button only appears on public Page posts and not on posts by any Groups, public figures, or users. "That's why today we are launching Reactions, an extension of the Like button, to give you more ways to share your reaction to a post in a quick and easy way". The test is presently quite limited, just for a small set of people in the U.S. only.
How would the Facebook "donwvote" button actually work? .
According to Facebook, the feature test will affect about 5% of Android users who have "English" set as the default language in the app. Moreover, the visibility of the post to which the comments were made would not be negatively impacted, so others would still be able to see the post in their news feeds.
Also, Facebook must implement some type of complex system where such a button can't be abused.