Lurk more and look closer.
Title 18, U.S. Code, Subsection 1591.
https:// www.law.cornell.edu/uscode/text/18/1591
Wrong. You need code to implant the suggestions. You need coders to write the code. You need someone to direct the code to be written.
There's your trail.
Wow. We needed researchers to tell us that sharing and discussion information can influence beliefs.
The distinction, I think, is whether ordinary users are sharing a story and promoting a topic or a (sponsored?) algorithm is manipulating what stories users see. The first is benign; the second is evil.