Startup Idea : Social search network for shopping malls

When visiting a store/hopping mall a lot of things can be annoying: Finding a store that has a specific item in stock, finding that specific store (especially if it's a large mall or new to you), finding a place with your favorite food, finding out if a specific restaurant is crowded, comparing prices of items among stores... . When you are at the store/hopping mall or before you go there you could use the app to ask people who are there or store staff, for example: You could upload a picture of a black shirt you saw somewhere and ask people if they have seen it somewhere in the mall. You could ask where you can eat good burgers. You could ask if there are any seats left in a specific restaurant. Whoever answers gets mall points, at a certain level you can exchange it for money, vouchers etc. Companies have real-time access to customers (and potential customers) and can answer (supported by chatbots for simple question) if they have the item you need or seats left in their restaurant. This good further be enhanced be providing indoor-navigation with, for example, beacons to help people find the location of their products.