Originally Posted by SolRaven
I hadn't heard of that. I move my cards around my readers all the time. Because my beau and I use all of the readers, I was thinking of keeping our own books on our own cards since they seem to hold the bookmarks as well.
I was referring to this thread
, though that might have been an isolated instance; alas I cannot test it myself since I only have a PRS-600. Seems plausible though, as the devices all have different capabilities I would expect this to reflect in the way they store information.