I think what bugs me more are the threads where the title states something like "WTB/WTTF All Roger Clemens" and they then proceed to say "no thanks, I already have that" to every poster offering cards. Obviously, then, they didn't want to buy or trade for ALL Roger Clemens cards! Such posts should be deleted until they learn to communicate.
Sometimes, it seems like TheBench needs a training area where people can be taught how to properly post their wants and cards for trade that result in concise and unambiguous messages about exactly what it is they have or are looking for.
And don't get me started on "I need everything that is NOT listed here" posts. If your post is supposed to tell people what you need, then post what you need, not what you have. It's not difficult to construct a wantlist. Especially when your wantlist would be shorter than you havelist!