Herein: a partial guide to the 2008 presidential race’s new-media-old-media bedfellows.

(a) CNN and YouTube.

(b) ABC and Facebook.

(c) MTV and…MySpace!

To wit: tonight, MTV and MySpace are teaming up for "a dialogue with John McCain", in which viewers and browsers can rock the vote 2008-style by submitting questions to the septuagenerian Arizona senator via IM.

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