Mozilla Concept - Productivity Mode

Ever get distracted by your news feed or favorite social networking site when you should be working? Or maybe it's an online game? We envision a smarter browser that helps you keep on track by allowing you to enter a "Productivity Mode," in which the browser will make you complete a challenge before proceeding to distracting websites. This challenge, we hope, would give you just enough time and mental distraction from your usual habits that you would make the decision to get back to work on your own.