I don't see what the big deal is really, I mean I agree, there isn't much difference than price matching later. And like everyone else stated the big ticket items will not be out anyway. HOWEVER, at my local walmart I did see this past week the following out already: Pajamas, Fleece lined hoodie jackets, puffer jackets, sweatshirts, flannel pj pants. These were out in plain site, however they were marked a different price.
I have done this, I have done it when it wasn't black friday (saw a movie, game,whatever and wouldn't have the money til later) and have done this for black friday (when I am mainly price matching other store items, dvd's, board games, etc). Just like the other person stated if the person working in that area does their zoning, then it wouldn't matter. But rarely do you see them do it like they are suppose to. I don't see how it is ruining black friday for everyone, that just seems absurd. Because you still have to push and shove for any big ticket items, push and shove for a friggin cashier, regardless of how you got your merchandise.
