Facebook just announced that a new marketing tool will soon be available through their messaging platform. How will it work? After designing your ad, you'll have the option to add a small "message" button. When users see your ad, they will be able to simply press the button to send you questions or comments! Now all you have to do is imagine all the ways it can help you convert more users, or how it can help you with brand awareness and PR stunts.
You can read more about it here.