Footnotes in The Spellman Files

I added to Lisa Lutz's The Spellman Files to the list of fictional footnotes. You can download the footnotes:

For those of you on the Kindle, or eReaders, you'll be happy to know that we're now making available the footnotes for all the books in a downloadable PDF (which you can use for quick reference): Download Footnotes for The Spellman Files. [PDF]

Are the footnotes not available in e-book versions of the novel? Is this generally true? I've never seen a Kindle, much less examined how it handles footnotes.