Created in collaboration with Marta Lwin; Mobotag reveals the hidden layers of a city through an active exchange of location based media and text messages via the cellphone. It's collaborative phone tagging of the city. Part virtual graffiti, part walking tour, mobotag creates a spontaneous and easy way for tagging a neighborhood via the cellphone. Send and view messages, images, videos and sounds. See art, read stories, and watch a hidden layer of the city reveal itself. Respond with your media and participate in the creative expression and mapping of your neighborhood.