Why is everyone being retarded?
He has something for sale, if you are interested in it, post. If not, you really do not need to say anything unless you are commenting saying the price of whatever he is selling is too high/low or something.
"I don't like it" is pretty much a pointless post, and I know in general they don't matter, especially since your uber 1337 kenny, but he said he doesn't want that in the thread. Since its his thread about what he is selling, you should respect that.