I first became aware of commiewatch from a bunch of European Maoists and Trotskyists on another list devoted purely to sectariana, leftist_trainspotters at yahoogroups.com http://groups.yahoo.com/group/leftist_trainspotters/
This fellow is pretty amusing most of the time, pretty accurate for a Rightist, little of the bile of Horowitz, and given he was a member of a Canadian Trotskyist sect for a bit of time (the sister party of the US SWP) he has a sharp eye for the foibles and dirty laundry of the far left.
Check out his photos here of the S.F. anti-war march, http://yardley.blogspot.com/2003_10_01_yardley_archive.html#106719035230901913 Did the person who waved the North Korean flag (which I missed! There was a RCP'er who was waving the Iraqi flag of the Ba'athists) intend irony? Is WWP really that goofball?