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SGN (Social Gaming Network) is a San Francisco, CA-based company in the Software and Internet sector.
Tangam Systems is a Waterloo, ON-based company in the Software and Internet sector.
Nerve Software is a Richardson, TX-based company in the Software and Internet sector.
Gamezebo is a San Francisco, CA-based company in the Software and Internet sector.
SGN is the largest developer of social networking games and applications.