Instapundit links criticism of his work by Conor Friedersdorf.
I guess the criticism is short posts aren't as good as lengthy, long-form articles (where he likes the professor's work there). Of course, Conor's article is so long and so goes off so many different ways I couldn't keep up. But at least I can read Instapundit's sitemeter - he broke 10 million visits each month in 2009.)
The past week has included kerfuffles with Andrew Sullivan and Charles Johnson. If we're signing up for teams, put me on the Instapundit one.
Not everyone needs to write lengthy articles all the time. You need a traffic cop to move readers to insights that might be helpful to them. And a traffic cop to stop you before you crash.