Barnes & Noble Testing Mobile Commerce; Blackberry Only

Barnes & Noble is gently testing the mobile-commerce waters, as it prepares to announce a deal on Monday to sell books, CDs and DVDs, but only on BlackBerry phones.

The deal with Digby will deliver a small version of the book chain's site—optimized for mobile, presumably—to allow faster and easier ordering. Downside: the BlackBerry version will only be updated once a day.