> We’ll use the reports from our community, along with other signals, to send stories to these organizations. If the fact checking organizations identify a story as fake, it will get flagged as disputed and there will be a link to the corresponding article explaining why. Stories that have been disputed may also appear lower in News Feed. It will still be possible to share these stories, but you will see a warning that the story has been disputed as you share. Once a story is flagged, it can’t be made into an ad and promoted, either.
So, "flagged" means "determined to be fake by a fact checking organization contracted by Facebook that disputes the article".
After a single flag from a single user?