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MoSoSo (mobile social software) is a class of mobile applications which scope is to support social interaction among interconnected mobile users. The basic idea of a MoSoSo is to overlay a location and time element to the idea of digital networking. It enables users to find one another, in a particular vicinity and time, for social or business networking.
Social software and groupware: CSCL and CSCW 
The term itself has its roots in social software and Groupware, computer applications designed for the desktop environment and aiming at facilitating various forms of social interaction, with the former being oriented to Internet-based informal exchanges, daily tasks and entertainment and the latter focusing on collaborative work (CSCW) or learning (CSCL) within a well defined group. Two typical groups that would benefit from these applications are work colleagues or school classmates. While the term social software, introduced by Clay Shirky in recent years, has gained much popularity, Groupware is not anymore a trendy word, even if it has a strong tradition that goes back to the Eighties. Scientific research on Computer Supported Cooperative Work (CSCW) and Computer Supported Collaborative Learning (CSCL) provides results which are still valid in the mobile environment. However, three important differences between desktop and mobile environments should be taken into account when conducting research on MoSoSo: firstly, the physical context of use moves from static desktop setting, where the user is typically sitting in front of his computer, to the more dynamic mobile context, which presents higher constraints to human attention, but also provides an opportunity for information or communication at anytime and anywhere. Secondly, the social context becomes wider, shifting from the group to the network concept. Rather than relying on static and known membership criteria, where group members usually know each other, social network ties change often and are not as dense as in traditional groups. Therefore, network boundaries cannot be easily identified. A mobile social network is the social space determined by a MoSoSo application. Finally, an important distinction concerns the ultimate goal of MoSoSo applications, designed for usage in everyday life situations, including not only tools for communication, but also for coordination and knowledge sharing. From this perspective, MoSoSo is more similar to social software than Groupware applications, which aimed at increasing productivity and teamwork at work or at school.
Technical perspective 
From a technical point of view, MoSoSo applications are very connected to the concept of Mobile Internet and the emphasis is more on data sharing than mere communication. Thus, only mobile phones with computational power, or Smartphones, can host this kind of applications. However, as there is not a universal definition of MoSoSo yet, many people consider as MoSoSo also phone calls and text messages, as they support social interaction on the move. In any case, the former perspective encounters wider consensus than the latter. The development of MoSoSo applications is rapid and already evolved from mobile extensions of Internet social networking sites to powerful software, providing novel opportunities for social interaction, especially when used for proximity interactions based on Bluetooth scanning and connectivity. The availability of GPS systems and the integration of maps in mobile devices offer great opportunities not only in the context of individual activities, such as "search", but especially in the social context. MoSoSo exploiting these possibilities is known as LBS-MoSoSo.
In one of the few critical studies on MoSoSo, Thom-Santelli (2007) argued that the real potential of MoSoSo was constrained by its limited conceptualization, and consequently implementation, as an urban entertainment gadget. Building on her argument, Lugano (2010) re-conceptualized MoSoSo as a general-purpose social platform for grassroots social change and proposed a holistic design model for empowering self-organizing digital communities to co-create, share and use community-generated services (CGS). By complementing public and commercial services, digital communities through CGS contribute to build resilience in people's lives and global information societies.
Being highly personalized and contextualized, privacy issues represent one of bigger obstacles to the wide adoption of MoSoSo.
Business models 
An emerging trend within the MoSoSo community is MoSoSo advertising. As of 2010[update], experiments in this are underway in the UK and Europe.
See also 
- Counts, S. ter Hofte, H., Smith, I.(2006) Mobile Social Software: Realizing Potential, Managing Risks, Workshop at the Conference on Human Factors in Computing Systems (CHI '06), pp.1703-1706
- Eagle, N., Pentland, A.(2004) Social serendipity: mobilizing social software, Pervasive Computing, 4(2), pp.28-34
- Quercia, D., Hailes, S., Capra, L. (2008) MobiRate: Making Mobile Raters Stick to their Word, Ubicomp '08, pp.212-221
- Lugano, G. (2010) Digital community design: exploring the role of mobile social software in the process of digital convergence. Doctoral thesis. Jyväskylä Studies in Computing 114. University of Jyväskylä.
- Lugano, G.(2007) Mobile Social Software: Definition, Scope and Applications, EU/IST eChallenges Conference, The Hague (The Netherlands)
- Lugano, G., Saariluoma, P.(2007) Share or not to Share: Supporting the User Decision in Mobile Social Software Applications, International User Modeling conference (UM2007), Springer, Corfu (Greece), pp.440-445
- Smith, I.(2005) applications, Computer, 38(4), pp.84-85
- Thom-Santelli, J. (2007)Mobile social software. Facilitating Serendipity or Encouraging Homogeneity?, IEEE Pervasive Computing 6(3), 46-51.
Other resources 
- "Mobile Social Applications Leveraging Location-aware Technologies: Behind the Hype with Market Leaders", Fierce Wireless, April 2010
- MoSoSos Not So So-So, Wired article, April 2005
- Connections, the Wireless Way - BusinessWeek article, June 2005
- MoSoSo + WiFi, m-trends.org, November 2005
- "The Telephone Repair Handbook", Mindjack, January 2006