Health Pseudo-Science Watchdog
Daily you see many posts online about health that are published without real scientific information behind them, or based on cherry-picked facts. These are misleading at best, and dangerous at worst.
Have a watchdog organization that scans the internet for these posts, and especially those that catch on. When one is found the team should initiate an online campaign showing the real facts behind it and shaming the publishers to take these down and (maybe) prevent them from doing it in the future.