Dion Hinchcliffe has a very informative blog on Web 2.0. His latest posting on Useful Distinctions in Social Software breaks social software into categories of use and application.
This is quickly becoming one of my favorite reads because he consolidates ideas, trends, research and current application into realistic postings that help us see what's going on in social media.
This time he shows us how we are using social software for social interaction.
Read his blog!