The Palm Pixi, the second webOS-powered smartphone, will hit store shelves in a few weeks. As expected, this smartphone will have an entry-level price, making it more affordable than its predecessor, the Palm Pre.This device will have a different design from the first webOS model -- a tablet shape, with a small keyboard fixed below its capacitive touchscreen.It is going to be released exclusively by Sprint, who will charge $100 with a two-year contract and $100 mail-in rebate.The Pixi will be...