Kassia Krozser has posted a long thoughtful piece on social reading.

As much as the idea of enhanced ebooks brings the sexy to publishing, it doesn’t really do much for most of the books published. Enhanced, enriched, transmedia, multimedia…these are ideas best applied to those properties that lend themselves to multimedia experience (or, ahem, the associated price tag). While many focus on the bright and shiny (and mostly unfulfilled) promised of apps and enhanced ebooks, the smart kids are looking at the power of social reading.