The PlayStation phone keeps popping up time and again, and still no one at Sony is going to flat-out admit anything -- but that hasn't stopped stopped playful speculation. Even SCE chief Kaz Hirai is joining in the fun. "We don't want gamers to be asking, what's the difference between that [a PS phone] and a PSP we have to come up with a message that users will understand," he told The New York Times. "It would have to be a product that keeps the PlayStation's strengths intact." So that's the issue, then, differentiating a new PSP and a va
