Purpose of the MarioKart DS ID microformat is to identify the friend ID of a Mario Kart DS gamer. Each player can have a list of friends identified by such an ID to play with via the Nintendo Wifi Connection. Being a microformat it can be easily embedded into an XHTML page, by using a class attribute enclosing the text contaning the ID. Simple example: My MarioKart DS ID is <span class="mario-kart
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