We feel rewarded by reactions to information we share, and that can lead to good and bad habits. Linka A Odom/DigitalVision via Getty ImagesIs social media designed to reward people for acting badly? The answer is clearly yes, given that the reward structure on social media platforms relies on popularity, as indicated by the number of responses – likes and comments – a post receives from other users. Black-box algorithms then further amplify the spread of posts that have attracted attention. Sha