@lagilagimasto I think this is a nice idea, but like many other nice ideas, this will only work if a lot of people will start to use this. And no one is going to start to use this, before there already are a lot of users. The classic chicken and egg problem.
Also, the current version of the website is very buggy.
If I click on a location pin and answer the question and click Post Answer, nothing happens. No error message, nothing.
If I click the "view answers" button, my answer is not there. And if I click the location pin on another location, my previous location's answer is still there (the form doesn't reset when changing location).
There should be no "next question in city" when no other questions exist.
Also, I don't really know how this is going to scale. Imagine one million users start to use this tomorrow. The location pins of big cities will be flooded with questions, and since the questions seem to work on city basis, imagine trying to ask where to get a good pizza in New York when you are in Manhattan, and the answers are going to be relating to entire city area, not just Manhattan.
Then there is the problem of data quality. Do you want a lot of data? Then allow everyone to ask questions and write answers without registering. But if you do that, the data will be full of trolling and nonsense questions and answers. And if you force registration, you will have much less questions and answers, especially since there are no incentives for anyone to answer, or give the correct answer.
And lastly, there is the problem of Google. Google basically has everything that they need to make this thing but a lot better.
Imagine if by some magic, luck and a lot of hard work this service becomes popular and people actually start to use it. Someone like Google could literally spend one week of development time and add a similar feature to Google Maps and basically kill your product over night.
Like I said, I think this is an interesting idea, but I don't know how this could work.