That sounds like an awesome way to assist in localisation. By analysing the results you could have one set of icons for your app for western countries, another for China etc. It reminds me of the problems planners had in trying to design airport signs for international visiters in the early days of flying and the confusion caused by complex signs asking people to wash their hands. The BBC did a documentary on early UK airports and it featured in it but fortunately I can't find it.