Got a Treo 650? Hoping for WiFi? This is your lucky day! This post on Engadget links through to a hack to make a SD WiFi card work in the Treo 650. For further usability, you can find a hack that allows you to tether to your Sprint Treo 650 via Bluetooth (wireless modem function) at TreoCentral.
Hey, if you are paying between $400 and $600 for a phone, you might as well be able to maximize its functionality.