He blocked me a while back because I accidentally hit the wrong demo. I emailed and he unblocked me, but I never did anymore because I don't work for blockers. Ever.He's been blocking people for a long time. He told someone at one point he blocks anyone who accidentally clicks the wrong demographic information, even if you didn't accidentally do anything wrong on all of the other HITs you did for him. I guess it's his version of an AC or whatever. He could very well be blocking for new opinions, too, but I don't think he's said that to any workers.