Welcome to a new feature on Tech Digest -- Bargain of the Week. Each week, I'll take a look around the web for the best tech/gadget bargain I can find, and report back to you. Now, there are deals all over the Internet, so I can't promise to always find the best deals all the time. If you know of some amazing discounts on a product, drop me a line. This week's product is the Jabra SP5050 Bluetooth Speakerphone, a slim, plug-n-play speaker that you can use on the move with any Bluetooth mobile phone. Answer and end phone calls, voice dial, automatic pairing, DSP noise reduction, night driving mode, and up to 12 hours talk time...