Has he vanished in the dead of the dark night? Did the vampires get him beneath the light of the recent full moon? Did the black witch bite his jugular at Halloween?
Ah Yes could be, the one time ubiquitous contributing legend was all over the place here like a warm virus, but what has become of him? Has he been abducted by an extra terrestial force and now living a fine existence of total abundance on the Red Planet...or maybe more realistically, has he joined forces with Scotland Yard in its pursuit of the evil Moriarty!? At this very moment preparing to go over the Richtosomething Falls and all for the greater good!!
Its a true mystery of the modern age so it is.
Or perhaps his computer is knackered again