Idea for cellphone app

considering how hard it is to find a decent arcade or even a place w/ a street fighter cab(or any other game) in it, i thought maybe it would be a cool idea to make an android/iphone app that works sort of like foursquare or yelp or something
you run it and it finds your location based on gps and shows a map with street fighter cabs(could have a game filter for other games) marked on the map. as far as i know there isn’t really a database of this info online already so it’d have to be user driven. you could open the app when you’re near a cab and add it(like how four square works) and put the address and game title etc
eventually if people used it we’d get a pretty good map of arcades and we could have a comment system for people to mark if arcades go out of business etc and a way to flag them as gone

does something like this exist already?
would anyone be willing to actually help or use this?
i’ve been meaning to play around with android development and i think this would be a pretty awesome first project to take on




What the hell is an arcade?

Is the smoking area for old asian gambler and pimply teenage drop outs.