[taming]

A note on backing up.

People may not be aware of it, but the kepub editions of books you purchase from Kobo "live" on your computer only as long as they are in your Kobo desktop app. They can be found here on windows 7 machines:
Drive Letter:\Users\YourUserName\AppData\Local\Kobo\Kobo Desktop Edition

If you want to keep copies of all of your kepub files forever, then you will want to set up a sync that will move any book that "lands" in your desktop app to another folder, but which never removes a file from that folder--a one way sync.

I use Allway Sync for this. You need to pay attention to the settings when you configure the backup, and you have to have it running in the background (also a setting) so that it picks up each book as it lands in the desktop app folder on your computer. As the Kobo kepub file names are alphaneumeric, rather than a listing by title and author, you will want to know what book you bought on what date to make that backup useful. You can check with the Purchase History in My Accounts on the website for books you have paid for, but you will have to track the free books yourself.

If you don't care if you have the kepubs, then you can use Adobe ePUBs as backups. i have both.