This document discusses how technology and wireless internet use is influencing social interaction in urban public spaces. It explores how ubiquitous computing and wireless connectivity are shaping human behavior. Some key points discussed include how the majority of Wi-Fi users connect to communicate with others not physically present, how this can lead to less exposure to diverse opinions, and how certain art projects have tried to use technology to force communication between strangers in public. The document proposes exploring further the social and cultural implications of ubiquitous computing on cities and ways that urban computing could be leveraged to promote communication through sharing personal and public data.