In the new media space, we use a lot of terms fairly confusingly:

Old media
Broadcast media
Mainstream media
New media
Social media
Personal media
Citizen journalism
Citizen media

Social media is the opposite - it’s media that REQUIRES the participation of others. Twitter, for example, would never have existed without other users in the network. PodCamp as a conference would never have existed if it was only one person who showed up. Take any of the social networks, remove the people, and you have something not useful at all.