With a fantastic Bluetooth headset on the market and a pumpin' portable speaker to blast out jams, how could Jawbone improve their product lineup? Well, we still think a stereo headset might be swell but that's not what the company delivered today. No, this is the Jawbone Era, the world's first Bluetooth earpiece with a built-in accelerometer for motion-sensing apps, and plenty more improvements where that came from. There's a new version of the company's NoiseAssassin noise-canceling algorithms that adjusts inbound volume a