Facebook management decided to change the way of showing trend topics to bring the overall improvements. Its official stated about this change in the Friday blog, now headline will not be used for describing the topic but trends states now in word, phase or hashtags. Though, one word is not enough to explain what the topic is about and therefore user can hover the cursor over the trend to see trend in the pop up window. You can also know about how many people are engaged and talking about the topic in the place of description.
You have to know that a real person behind the scene is actually writing those descriptions which take time. Facebook have installed the automatic process which lifts up the burden on Facebook employees typing all this.
The trending topic feature of the Facebook has also been criticized by the tech blog Gizmodo which alleged that Facebook is using its trends topics to influence the political decisions which is unethical move. Moreover, political blogs were also raising voices that a Social media giant is taking unfair advantage of its bigger size and snatching the business from them.
Due to all these controversies, Facebook management took a big initiative and changed the trending topic feature.