Also from the Slashdot interview of Neal Stephenson, looks like he’s been following the axons:

As _Snow Crash_ was originally designed as an interactive game, and such landmarks as _Myst_ have regenerated as (usually bad) novels, do you see the arrival of a truly multimedia story, delivered simultaneously in multiple media, anytime soon? By whom, specifically or generally?

Neal:

It has already happened in the form of the I Love Bees alternate reality game, which, as many of you must know, is a promotional campaign for Halo 2. I know the people who did it, but I have lost track of what I promised not to reveal publicly, and so will shut up for now.

Still no axons gone hot in Helsinki, AFAIK…