I posted that the exact right answer isn't here...
When I first got my reader, my plan was to keep a couple of unread books at a time on it, and then as they were read, I was going to remove them and replace them with unread ones.
That hasn't happened. I find that I'm keeping some, deleting others, putting a lot of unread books on, but not all...so it's a total mishmosh at the moment.
In the future, I'm going to
try to organize better (I had a thread going about this, and I thank everyone for their suggestions), but knowing me, my reader will continue to look like the trunk of my car...full of odds and ends, useless and useful things, and no systematic method for keeping track of it all