PDABuyersGuide has a review of the Nokia 6820, that crazy Series 40 phone with the flip-out keyboard that’s now available through AT&T Wireless. It isn’t packed with cutting-edge features, but for those that SMS or email a lot, having a full QWERTY thumbpad could be great. It would also be wonderful for those that have always wanted an excuse to carry a Bat-A-Rang, but were never quite comfortable in PVC pants.