The accuracy and completeness of our map is dependent on 'crowd sourcing', so please take the time to add a couple of fruit trees you know about in your neighborhood, or some that you see on your travels.
The project was borne out of both nostalgia for an earlier time where public fruit harvesting was in every kid's repertoire (alas that is not longer the case today) and longing for a utopia where a good portion of our food production is done within city limits.
Fruit trees are most efficient at this, and it is in fact conceivable for all human fruit needs to be addressed by street trees where houses are the dominant type of dwelling. Each house has 3-6 trees around it, so the ability to produce 200x5 = 1000 fruit per season. We each consume about 2 pieces of fruit per day, so about 500 per year; that means the immediate vicinity can provide the fresh fruit for 2 adults per household, and that is discounting parks, green spaces around places of business and other unused space that would be available. Of course such scenarios pose some big logistical challenges, such a rampant rodent population that would result from easily accessible food, but they are not insurmountable.
For now, mapping should make both the city happy (less unharvested mess to clean up) and those of us that believe in leaving a lesser footprint on mother earth and the joy of exploring the urban forest.