He writes:

"Sadly, the very comments on Alegre's strike post over at dKos - where
leader Markos Moulitsas has become increasingly harsh in his attacks
on Senator Clinton - prove her case for the walk-out. And thus far, 68
Kos writers have joined the strike...Mark Ambinder and Jake Tapper
have more. And don't ignore the mirror post at MyDD, where many of the
ex-Kossacks have decamped for more balanced discussions."

http://tomwatson.typepad.com/tom_watson/ 2008/03/the-left-splits.html