Sorry if I've upset you Calibre users, that was never my intention.
I suppose I am a little bit of a control freak and as such I like to have complete control of how data is stored on my computer. I just don't like the way Calibre forces you to adopt its way of working, just about every other piece of software I use allows me to define the location for files produced or edited. I don't want a library that is full of folders with perhaps just one book in them.
By using Reader Library I can just import the books, from the location I specify, and load them to my 650 without it having duplicate the file and create a new folder. Once I've read them I can delete them from the reader and Reader Library and everything just as it was with the original file untouched.
Why does Calibre need to create a copy of a file that exists in the location I imported it from?
Say I import Ranulph Fiennes autobigraphy - Mad, Bad and Dangerous to Know - (which I have filed in my biographies folder) into Calibre the first thing it will do is create a Ranulph Fiennes folder with a sub-folder Mad, Bad and Dangerous to Know with the epub, cover iimage and metadata files in it.
WHY???
The book already exists in the Biographies folder - and is still there!
You may be happy with that but I am not. The only thing I use Calibre for is to strip the DRM from epubs. If I buy a real book it's mine to do with as I wish and the same should apply to ebooks I buy.
Anyway each to their own, the world would be a boring place if we were all the same.