Hey, I am sure that this subject was covered before (maybe 1 or 2 years ago - anyways i cant find the thread) Is it better to have your Preferred domain set to WWW.google.com or google.com. Does it matter at all ? Someone told me that with NO WWW your site gets more search results. Yes, it does make sense but if its true than why Google gives you an option ?
Never heard of nor experienced any traffic increase after writing the www redirect. Personally i go with www where it seems to fit - dont think its that important - just a visual thing really.
It's adviceable to choose one of the options and redirect the other one using 301 redirect in .htaccess Check this post from the Matt Cutts's blog: http://www.mattcutts.com/blog/seo-advice-url-canonicalization/
I truely agree with "blichev", As I had tried for one of my site and I failed to get results, before no www I hope this solution gets your problem solve!!
It actually does make a difference, but not to rankings.. and yes using www for domains and http for sub-domains is my preferred way.
thanks for the link...i want to do that to centralized BL's from my site with www and with no www...:)