Quote from hayman:
This is a ridiculous concept, which mitigates the usefulness of the Limit Order Book, on the NYSE. Specialists capriciously use this "rule" to penny in front of limit orders, at convenient times. People willing to pay market get price improved (but they were willing to pay at market in the first place !), whereas people with limit orders at the top of the book, get screwed !
You have to learn how to use NX orders, market orders and ECN orders effectively, especially in faster moving stocks. The Specialist's Open Book is very dynamic because of orders constantly being entered and cancelled. You can't expect to get a decent fill by relying on NYSE limit orders. Obviously, the traders who go market will have priority over you. That's the way the game works. Learn to adjust and quit your griping.