[nerys]

Several reasons really. It can paly Music and Audible all of which could consumes many gigs of space. I could almost fill a 16gb card with just my audible content. I would never use my reader for audible (I use my ipod or blackberry for that) but there it is :-)

why use a card? because its easier for ME to control and manage. I don't do DRM so I just pop the SD or Mem Stick card into the reader slot and copy what I want to it and pop it into the reader. Makes it nice and easy :-) I can even find a book on my Phone download it to a micro sd card and insert that (with adapter) into the reader (caution some adapters are a wee thicker and HARD to insert into the reader don't break it)

all while "out and about" this gives me "kindle" like access without the annoyance of a kindle or the cost :-)

yes MSD's do come in SDHC flavors. I have an 8gb card in my blackberry and 16gb cards are common now. I do not like MSD's though extremely extremely fragile.

I have a wee camera that I put in rockets that takes them and I do not use it anymore. the cards get damaged 90% of the time when I fly it. They just can not take any sort of stress.