Mr. Bill Thomas has passed on as of November 2011. He has been fighting something for quite a while now. He was truly one of a kind. He will certainly be missed by all that knew him.
Rest in piece Bill 
Mike
This is very sad news, although not terribly surprising given the long unexplained absence.
Bill's posts here were far and away the best of their type I have ever seen, in any venue. His workmanship was extraordinary. Not many people would be willing to tackle something like taking the Scott preamp down to bare metal and back, even fewer would succeed. His was a singular talent that will not likely be repeated.
I never met the man personally, only through audiocircle, but I feel a personal loss nonetheless.
Brett