Originally Posted by BobKat
It probably becomes a concern only when you have many books/files. Maybe the majority of the user base for the kindle would not need it, but I was never part of the majority
I have 1600 books on my Kindle and I've never had a problem sorting into collections. Then again, I tend to do it in small batches (1-10 files per day) so I never have a problem sorting through which books still need to be put into collections. I just open the relevant collection, tag my books, and I'm done. I use Calibre to organize all my Non-Kindle books, too.