A few basic questions to ask before sharing anything you did not write yourself, especially something you found on social media:
(2) When was it written? Is it still current?
(3) What do you know about the author (not the person who shared it, the *author*) that makes them a trustworthy source? What conflicts of interest do they have?
(4) Does the person who shared it have a habit of sharing things from untrustworthy sources, or sharing links to articles they haven't actually read?
(5) Does a quick web search for a quoted chunk of the text lead to a lot of hoax and scam warnings?
(8) Who benefits from this information being read and believed? If it's true? If it's false? If it's a mix of true and false?
(9) Is it easy to tell what's fact and what's opinion? Are facts presented in a way that makes them easy to verify?