Having relinquished the 40-hour mobile listening limit (at least, starting September), Pandora's added a new sleep timer to its apps too. It's probably a lesser issue, given Pandora's aforementioned announcement, but the improvement (apparently coming direct from its users) should ensure that you're able to protect at least some of your carrier data if you fall asleep listening to your tech-pushing artist of choice. You'll get to pick from a dizzying array of countdowns -- well, 15, 30 or 60 minutes -- while Pandora promises that more (less soporific) features are on the way.