That is strange. There was a thread on another forum I frequent about a week or so ago that was observing the opposite, that many places were now ignoring the www. part as many now see it as redundant. The reasoning was that it's likely that it'll be a website at the other end of an HTTP server so why bother marking it as such.
I wonder which way around it is, I can't say I've noticed it one way or another.
