Facebook is testing a new "downvote" button that will let people hide comments and provide feedback about them.
However, the social network denied that the new feature was a "dislike" button, which many Facebook users have requested.
The downvote button is being tried out by a small number of US users.
The company also announced a number of other measures aimed at improving the Facebook community.
The social network confirmed the test to news site Tech Crunch.
"We are exploring a feature for people to give us feedback about comments on public page posts. This is running for a small set of people in the US only," the company said in a statement.