Here is a repeat:

The original post made no mention that the 
seller was misrepresenting his/her item.  The 
original poster only commented on how much it 
was going for.  If the seller was 
misrepresenting his/her item, then I have no 
problem with someone emailing the bidders.  

However, I would consider an email like, "I 
bought that for $5, you're stupid to pay x-
amount for it" bid interference, which is how 
the reply read. I've heard of a lot of that kind 
of crap going on, and I'm really tired of it.