Startup Idea: Social Media Addon for Restaurant Discounts

Startup idea to develop a social media addon that incentivizes restaurant patrons to promote their preferred eateries by offering them a discount for every referral who attends the restaurant. The mechanism is based on post likes or first time discount code usage.

Restaurant industry: Have an addon for social media that gives you a % off of your bill for every person that you promote and attends a restaurant that you were talking about. So for example, if someone likes your post or uses your first time discount code, both them and you would recieve a discount off of your bill the next time that you are in. This encourages people to socialize about places that they like, to return to the place that they like, and to encourage their friends to attend there as well.