ReDrum and I have had many disagreements over many things large and small but we remain what I like to think of as friends. Granted, he has never spoken to me like he has to some of you in this thread. On the other hand, I've never spoken to him like you people have. It's funny how that works, isn't it. I just made him an offer for an item last week that he chose to ignore. Do I think any less of him for it? Of course not. He and I obviously had a different idea of the items value. Do I think less of him because we have a different idea of an items value? Of course not. How stupid would that be. Anything I have ever bought from him was exactly as stated in his listing and it arrived to me fast. I value very highly being able to know what I get from him is what I expected.
As far as blocking bidders, I also do it all the time. If I even suspect anything, they are blocked. I have blocked many members of the Org because of attitudes I sense because of their posts. It's not worth taking a chance of a hassle developing. A seller has the right to block anybody that they wish for any reason.
Dan