Originally Posted by luag
iPod is great because it can store thousands of music in a small device, without the bother to change cds/MDs.
so to have 1000 books in 1000 SDcards is just not as convenient to have 1000 books in one memory card. (while convenience is one major sell point for ebooks; and in direct comparison: mp3s)
That is an excellent point, and I expect that the answer to which is more important is going to be different for different folks.
However, consider that mp3's are a bit different from books in that they only last for 2~4 minutes each, so an audiophile has a very strong need to carry thousands of mp3's around with him. Books, on the other hand, last a bit longer per "file," so the need to carry a huge number of them around at once may be low enough to offset that somewhat. Then there's the detail that SD cards themselves are really quite small, so you could
carry even as many as a dozen or so fairly easily; particularly if the reader had storage slots build into its cover as my PalmPilot's case has.
Those who wish to carry around their entire libraries would be disappointed (or have to get a shoebox), but others might not be too bothered by that trade-off.