Here is a note from Steve Rubel on this:
iTunes has quietly started to offer PDF enclosures subscriptions in the podcast section of the store. First up is the Wikinews print edition. You can search for and subscribe to Wikinews in the iTunes Music Store. (iTunes link) Instead of receiving an audio enclosure, iTunes will download a special PDF for you every day on cue. Wikinews, a citizen journalism site powered by wikis, also offers a PDF feed on its own that does not require iTunes. See iTunes screen grabs below.
There’s more. Wikinews is not the only PDF you can subscribe to in the iTunes store. Rick Steves’ audio tours include both audio and PDFs (iTunes link).
Sure gets you thinking, doesn’t it, about offering all kinds of white papers and newsletters this way using iTunes? The beauty of the RSS 2.0 protocol is that you can attach any kind of file, so I wonder about offering PowerPoint or FLASH file attachments too. We shall see.
Tom
