Although it is denying foul play, Facebook is apparently stealth-testing its search capacities in a move clearly threatening Google's search engine supremacy... and NOW, in turn, Google is rumored to be on the verge of launching a "Google Me" service that would jeopardize Facebook's domination of the social scene? Who's killing who or is it the beginning of a genuinely more social-aggressive stance on the part of Google? Let the game begin but first, here's what you need to know.

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