Analyst Shaw Wu of Kaufman Bros. has raised his estimates for Apple, in spite of poor economic signs. The increase is tied to strong momentum from iPod and Snow Leopard sales. The new video-capable iPod nano is said to be leading the way, while the new Touch -- as cheap as $200 -- is described as strong, despite missing rumored additions. Games, meanwhile, are generating more interest in the Touch and iPhone than originally expected. Snow Leopard's $29 price is seen as a major driver in consumption of the new OS.