Originally Posted by Just4Fun
Personally, I don't care for the Kindle's directory confusion when I use an SD card. You have to wade through pages and pages to find the material that you want. I do use an SD card, but I move the material from the card to the reader.
One thing I've tried with some success is to move books to the SD card and then when I'm connected via USB move them from the documents folder to a new folder, say backup. This keeps them on the card but they no longer show up on the Kindle's content list.