Jamais Cascio on his chunks of the Meta Verse Road Map Report. He's Fram Ing is as 4 "scenarios", as in Scenario Planning, but not in the sense of saying that any one of those 4 things could happen, but rather that all of them will happen - he's really defining spaces within a single scenario.
Sept'2007 update: he used this model in framing issues related to the Singular Ity.