It's hard to believe the Sony Mylo (short for My Life Online, get it?) lasted nearly four years before Sony eighty-sixed it. But from September 2006 until it was discontinued in 2010, the Sony Mylo was a pocket-sized mobile device designed for instant messaging, Web browsing, media streaming and other communications. Mylo's big problem was its use of Wi-Fi only and lack of cellular connectivity, which would've made it truly mobile. Still, the device made it through two generations before Sony called it a day, despite its $300 price tag.