Them CIA guys is paranoid.I did a deal once with a guy who didn't want me to leave feedback for him and he wasn't going to leave feedback for me. He was worried about being able to be "traced." I realized about 5 minutes into the meet that his wife wasn't just walking the dog...she was securing the perimeter. Great guy and a good meet though. Just odd.
And ereryone knows feedback can be traced, but ads and PM trails can't.