I talked at some length with Amazon customer support about memory cards for the Kindle.
I was told, by more than one person, that a 4GB SD (not SDHC ... just SD) card was all they would recommend or support the use of.
So, what do I see today, prominently displayed on the Kindle Home Page?? An "access kit" that includes an 8GB SDHC).
I really do wish Amazon and Amazon customer support would get their stories straight. I cancelled my order for an 8GB HDSC on their say so .... good grief.