We were hoping it was just a bad dream when we heard last year that Sony was launching yet another version of the Memory Stick. But it looks like the company was serious about it, and you can soon begin adding Memory Stick Micro (aka M2) cards to your collection of Sony-specific media. Like MicroSD, MiniSD and TransFlash, M2 is designed to be used in cellphones, and chances are good that if you pick up any Sony Ericsson phone announced from now on (including today's newcomer, the M600) you'll have no choice but to go with M2 if you want to add storage. And chances are even better that you'll never see it used in any other manufacturer's products.

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