Facebook, pressed for years by users to add a "dislike" button, says it is working on the feature and will be testing it soon, AFP reports.

"We've finally heard you," CEO and founder Mark Zuckerberg told a public town hall meeting in Facebook's hometown of Menlo Park, California. "Probably hundreds of people have asked about this, and today is a special day because today is the day where I actually get to say we are working on it and are very close to shipping a test of it," Zuckerberg said.