>"Every day, I sifted through hundreds of topics (or “keywords”) that Facebook told me were trending on the platform. Then I’d choose a story about the keyword(...)"
>“Facebook relies heavily on just 10 news sources to determine whether a trending news story has editorial authority.”
>"Several times curators were penalized for using Twitter in descriptions."
It seems that Facebook is likely to manipulate the news by selecting the "right" sources. If there's bias it most likely come from the selection, I wonder what are the source titles. Also, penalizing for mentioning Twitter shows that they put their own intrest over their users. It is understandable to some degree from the economic point of view, but it also shows the danger of having one company dominating the market. Facebook is not that benign, even now.