[AznHisoka]

Google understood this long ago. You need human editors/curators who can manually flag spam. Otherwise your index will be filled with spammers who gamed the algorithm correctly. Those that argue differently never was responsible for such a large-scale search/media operation.

[mtberatwork]

Google News claims to be entirely machine run without human intervention.

"The selection and placement of stories on this page were determined automatically by a computer program." [1]

[1] https://news.google.com/

[MasterScrat]

I would guess Google News uses fewer and more trusted sources, such as the homepage of well-known news websites.

I doubt Facebook marketers have the same kind of standards.

[awqrre]

Google News source selection is pretty broad and I don't think that the sources are selected by humans...

[MaysonL]

The thing is that that computer program gets tweaked, and tweaked, and tweaked again. See for example Google Panda update.

[dredmorbius]

Sources and deselection may be otherwise, and the statement doesn't exclude the possibility.