Tagged is a number three, not owned by a large corporation, not a previous giant. When it comes to social networking, network effects normally result in one or

Tagged is a number three, not owned by a large corporation, not a previous giant. When it comes to social networking, network effects normally result in one or two highly visible giants and a long tail of smaller, likely specialized networks. These can still be profitable, and of course there's more to the web and startups than stuff that is social in nature.