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How did the absence of mobile phones affect the romantic life and death of Shakespeare's Romeo and Juliet? The difference in their situation would have been part of the social change to networked individualism from group-based societies. The Mobile Revolution would have afforded personal communication rather than the household-centered communication of the Montagues and the Capulets. Romeo and Juliet would have been always available to each other, instead of wondering where the other might be. Location-aware apps would have plotted their whereabouts. The course of true love would have been more connected.

There is some panic in the United States about a possible decline in social connectivity. The authors used two American national surveys to analyze how changes in the number of friends are related to changes in Internet use. The authors found that friendships continue to be abundant among adult Americans between the ages of 25 to 74 and that they grew from 2002 to 2007. This trend is similar among Internet nonusers, light users, moderate users, and heavy users and across communication contexts: offline, virtual only, and migratory from online to offline. Heavy users are particularly active, having the most friends both online and offline. Intracohort change consistently outweighs cohort replacement in explaining overall growth in friendship.

What is the Internet doing to local community? Analysts have debated about whether the Internet is weakening community by leading people away from meaningful in‐person contact; transforming community by creating new forms of community online; or enhancing community by adding a new means of connecting with existing relationships. They have been especially concerned that the globe‐spanning capabilities of the Internet can limit local involvements. Survey and ethnographic data from a "wired suburb" near Toronto show that high‐speed, always‐on access to the Internet, coupled with a local online discussion group, transforms and enhances neighboring. The Internet especially supports increased contact with weaker ties. In comparison to nonwired residents of the same suburb, more neighbors are known and chatted with, and they are more geographically dispersed around the suburb. Not only did the Internet support neighboring, it also facilitated discussion and mobilization around local issues.

The authors examine the experience of the residents of Netville, a suburban neighborhood with access to some of the most advanced new communication technologies available, and how this technology affected the amount of contact and support exchanged with members of their distant social networks. Focusing exclusively on friends and relatives external to the neighborhood of Netville, the authors analyze community as relations that provide a sense of belonging rather than as a group of people living near each other. Computer-mediated communication (CMC) is treated as one of several means of communication used in the maintenance of social networks. Contrary to expectations that the Internet encourages a global village, those ties that previously were just out of reach geographically experience the greatest increase in contact and support as a result of access to CMC.

We propose a network analytic approach to the community question in order to separate the study of communities from the study of neighborhoods. Three arguments about the community question-that "community" has been "lost," "saved," or "liberated"-are reviewed for their development, network depictions, imagery, policy implications, and current status. The lost argument contends that communal ties have become attenuated in industrial bureaucratic societies; the saved argument contends that neighborhood communities remain as important sources of sociability, support and mediation with formal institutions; the liberated argument maintains that while communal ties still flourish, they have dispersed beyond the neighborhood and are no longer clustered in solidary communities. Our review finds that both the saved and liberated arguments proposed viable network patterns under appropriate conditions, for social systems as well as individuals.

The network approach to urban studies can be differentiated from other approaches by its emphasis on the primacy of structures of interpersonal linkages, rather than on the classification of social units according to their individual characteristics. Network analysis is also a methodology for the investigation of these structures. Substantive issues related to interpersonal ties in the city, migration, resource allocation, neighborhood, and community are examined in terms of the network structures and processes that order and integrate urban activities. Finally, a view of the city itself as a network of networks is proposed. It is the organization of urban life by networks that makes the scale and diversity of the city a source of strength rather than of chaos, while it is precisely that scale and diversity which makes the existence of a complex and widely ramified network structure possible.