Google, Facebook, TikTok and others are starting to talk more about how their algorithms work in a bid to win trust.

Yes, but: It's hard to know what isn't being revealed.

Be smart: While these efforts to be transparent are helpful, they don't usually provide the full picture about how the platforms' algorithms work, in part because they don't want their systems to be gamed by bad actors.

The big picture: Around the world, regulators are beginning to question whether the algorithms used to drive billions of dollars of internet commerce and content are biased towards certain demographics, philosophies or viewpoints.

Between the lines: Republicans and Democrats have both cited transparency into content moderation as a goal of changes to Section 230 of the Communications Decency Act.

What to watch: Competition regulators around the world are starting to dive into whether and how Big Tech algorithms harm consumers or competitors.

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Tech giants open up about their algorithms - Axios