The deployment of downvotes, even on a limited scale, comes after years of rumors of a “dislike” button, which the company itself has helped fuel through mixed messages. Reddit, the website best known for its use of both positive and negative signaling, has shown mixed results from studies where downvotes were hidden from other users, and a number of communities opt to turn the feature off to prevent mass-downvoting (called brigading) of controversial content.

It’s unclear if the feature will ever be rolled out to all users, and Facebook has not yet responded for a request for comment. We’ll update when we hear back.

Update 2/8/18 8:31pm ET: In a statement to Gizmodo, Facebook described the test as brief and distanced itself from the notion that the new “downvote” action was in any way a dislike button. “[W]e are not testing a dislike button. We are exploring a feature for people to give us feedback about comments on public page posts,” a spokesperson wrote, “This is running for a small set of people in the U.S. only.”

Facebook further clarified that public page posts where the test is current running for an estimated 5-percent of Android users only, do not affect ranking and the number of downvotes are not displayed in any way.