Say, did the air just get a little richer in vapor? Sony has titillated its home nation with a demonstration of a new flexible e-paper display, which looks set to compete with LG's, HP's, Toshiba's, and hell even Sony's own, flexi-display ventures. Employing a plastic substrate, the above prototype is apparently capable of being rolled up like a regular old newspaper -- presumably fly-swatting is not a problem either -- but we have our usual reservations about yet another flexible display teaser. Oh, they're all gorgeous and revolutionary, it's just that we're not seeing too many of them in our local Walmarts, you know?