I haven't commented on the whole Perle/Blitzer/Hersh incident. Everything's been hashed out fairly well. But I did see an amusing quote from JMM that I thought was worth repeating. Here goes:

Trust me, if lacking a theme in your articles made you close to a terrorist most of my friends and I would be down in Guantanamo with burlap sacks over our heads.

Couldn't have put it better myself.