Heh. Not only do I
not use DRM, I have a page in the book that states that the book is DRM-free and also encourages the reader to email me for a replacement copy if they believe the store erroneously applied DRM to the book. And I also have a line in there encouraging sharing, lending, copying, etc. -- right underneath the Creative Commons Copyright notice.
So, no, I don't use DRM and I think it is utterly valueless to me.
