being the amateur im not sure how that happens, it was my understanding that if someone is asking say 1.00 and someone is bidding 1.00, the MMs should put them together and make a transaction. If someone puts one of their orders in with a specific MM like Nite or Vert for instance then the entire transaction has to take place through that medium. Obviously i don't know the whole story though b/c ive seen equal bids and asks on the auto server with no action. It would be great to hear how that takes place and it sounds like itlogic has an answer