Predictim, an online service that uses artificial intelligence to assess a babysitter’s personality, scans candidates' Facebook, Twitter and Instagram posts to offer automated "risk ratings" for drug abuse, bullying, harassment, being disrespectful or having a bad attitude, the WashPost's Drew Harwell writes. Dozens of firms are also selling employers "systems that analyze a person’s speech, facial expressions and online history."

Why it matters: "The technology is reshaping how some companies approach recruiting, hiring and reviewing workers, offering employers an unrivaled look at job candidates through a new wave of invasive psychological assessment and surveillance."