December 7 - 2:10pm EST   Nextlink has just released the Invisio G5, claiming it to be the world's smallest Bluetooth headset and also one of the most unique. At a weight of about 0.25 ounces, the piece is light enough to only just be noticeable and is small enough to avoid being intrusive. It should also be more comfortable than most such earpieces for long stretches of time, Nextlink says. An unusual earbud implementation known as Soft Sprung designed to stay in place without exerting much force on the wearer's ear canal. [full story]