I was very disturbed to find that my 8 months of free ink was only available if I set up an HP InstantInk account. I bought not one, but two, HP 8035 printers on the basis of the promo. I later realized purchasing my second unit that I wasn't receiving 8 months free ink on my first printer because I didn't set up an instantInk account (manditory). First misleading experience. The I received my first ink replacement based on registering my second unit. I used the black on my unregistered printer because it needed ink. I then purchased a second black cartidge and used it in my registered unit. InstantInk immediately sent me an email saying I couldn't do that. Next, I learned I now had two months supply (I had only owned the units for two weeks). A second misleading experience. I am very disappointed in HP's slip shod conduct.