Okay, I'll try not to get myself in trouble here, but suffice it to say that I set out to read a book made for the Kindle on my Sony Reader.
I downloaded Kindle for PC and chose some book for $0.99 on which to perform my experiments. These were unsuccessful. Just to see what would happen, I added the book as-is to Calibre and converted it to epub format and loaded it onto my Reader. Wonder of wonders, it's completely readable.
I thought books from Amazon were all DRMed. I'm now assuming they all aren't, but surely some/most must be. Is there a way to tell? I was really surprised that the Amazon book worked on my Reader with no problems.
Sorry if this is an idiotic post, or I'm missing something here that is common knowledge.