A tweet from Patrick Dunleavy pointed me at this post by Mark Carrigan about Multi-Author Blogging at Warwick, which argues that "Increasingly, popular and successful blogs are taking on a new form: the multi-author blog."
My feeling is that this rather overstates the case. While it is true that we are seeing the rise of a number of high profile team blogs, for me, the true wealth of the blogosphere still resides in the lone author (usually but nort invariably an academic), often freeing themselves from the burden of their direct responsibilities, writing about their interests, passions and knowledge.
And while it's true that it's easy for lone authors to fall off the blogging wagon, they still produce more insight than agenda-grinding tag teams.
Let's have lots of blogging diversity, and let a thousand flowers bloom. I know who my money's on for the next intellectual leap forward.