Facebook's Trending Topics—an innocuous-seeming little sidebar module that has become the seething epicenter of controversy over bias and fake news—is getting another reboot.

In the past, Facebook might have identified a topic as "trending" based on a single, popular article or post. Now Facebook says designating a topic as "trending" will depend on how many publishers are posting stories on the same topic, as well as how many people are liking, sharing, and commenting on those articles.

A headline from a single article will now accompany each Trending Topic link, selected based on a mix of factors: the number of shares, "engagement" on Facebook with the publisher, and whether other articles are link to the piece. Facebook points out that headlines that appear when you hover over or click on a Trending Topic; this tweak makes the headline more visible. The company also says it won't strictly limit which publishers' headlines could potentially accompany a topic—a departure from the list the company reportedly once kept of sites and publications whose links it would allow in Trending Topics.