MocoSpace

MocoSpace is a social network specifically designed for use on a mobile device, also known as a mobile social network. The features of the site are similar to other social networking sites. Features include mobile chat, instant messaging, photo and video sharing, as well as forums. MocoSpace is an off deck mobile site, which means that it isn't featured on the start page of cell phone carriers but is a standalone mobile web site that can be visited by any phone with mobile web access. MocoSpace is one of a number of Boston-area startups focusing on developing applications for the mobile web.  MocoSpace is the largest mobile social network in the U.S. with well over 10 million registered users and over 3 billion monthly pageviews. It is also one of the largest mobile websites of any type in the U.S. as reported by Hitwise and Opera.

MocoSpace was co-founded in 2005 by Justin Siegel and Jamie Hall , who had previously co-founded and sold mobile gaming company JSmart Technlogies in 2004 to SkyZone Entertainment, an affiliate of Korea's SK Group.  Venture funding for start up companies in the mobile space expanded rapidly starting in 2005, and MocoSpace was a beneficiary of this trend. In 2007, MocoSpace received an initial $3 million series A round of venture funding  and in January 2008 received a $4 million series B round of funding. At that time, MocoSpace also announced 2 million registered users and 1 billion monthly page views, placing it among the very largest off deck mobile social communities. Like most social networking services, the business model is based on serving advertisements to users.