ergophobe - 10:09 pm on Jan 31, 2013 (gmt 0)
I wouldn't count on WMT sorting everything out.
My point was that I'm seeing a lot of amateur sites (even though usually created by a "professional web designer") that have the same pages listed with and without the www and that you see this if you do a site:example.com search and compare it to site:www.example.com
If you give Google at least a clue or two - WMT and having consistent internal linking - it will usually sort things out for you. If you don't give it some help, it will definitely NOT sort it out for you. But I think you shoudl get as many cues correct as possible.