[BrianFreeman]

Originally Posted by DMSmillie

Actually, the 2005 ISO standard for ISBNs specifies that every distinct format of a book (including different electronic formats) should be given its own ISBN. The International ISBN Agency published a "position paper" in February 2010 on ebooks and ISBNs which is available online as a PDF:

E-Books and ISBNs: a position paper and action points from the International ISBN Agency

That's certainly the position I would expect them to take since they make money from selling ISBNs.

Brian