After a ton of reading I can't decide to redirect www to canonical or visa-versa? Seems people have arguments. The page rank reads the same for http://www.joyvisioncare.com & http://joyvisioncare.com -- is there some tool I can research to see other attributes towards SERP I might discover out there???
I don't think there is big difference for SEO. You can use either WWW or non-WWW for your web site. Do not use both at a time otherwise search engines will treat both the web site as a separate web sites. You can also set preferred domain for Google from Webmaster Tools. Kailash