Facebook fact checks user for sharing Covid-19 meme: Facebook fact-checked a user for sharing a meme about the Covid-19 vaccine. The meme said, "So if the shot works, why is the shot not working?" According to a purported screenshot, Facebook claimed the post was "missing context" and added a notice to the user's post. The platform linked to fact check article by Lead Stories. Fact-checked posts lose exposure and are negatively affected by the platform's algorithm.