Can This Rogue Fact-Checker Make a Difference on Twitter?

Behind the wave of wildly popular science and history social media feeds, such as @DoYouScience, @oldpicsarchive, and @ScienceAllDay, there is a rogue fact-checker calling out the fakes. Paulo Ordoveza tweets at @PicPedant, an account he uses to challenge mislabeled, fraudulent, and PhotoShopped images that go viral. He also nags these feeds to give credit to photographers and sources whose work they distribute. He is, in short, leveraging the speed and transparency of Twitter to bring a kind of journalistic culture of fact-checking to the public realm.