From Slate.com: textcasting.

The text is actually contained in a 15-minute audio file. (It’s 15 minutes of silence, which is how we make the file so small.) Play the file as you would any other podcast, and then hit the iPod’s center button two or three times until you reach the description field, which contains the full TP text. You can scroll through the text using the iPod’s scroll wheel.

All this for the lack of a feed reader.

The fact that a hack like that would be floated by a big site like Slate says a hell of a lot about the iPod’s power in the marketplace.