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.
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.