canonical links cannot be ignored, your site url must be in given form,
http://www.domain.com if you find url having without www just redirect the webpage to your main websites home url. that will be benefited and your site will saved from canonical issues.
...I guess this has run its course one,twice and maybe three times over
Mike Swiffin - Community Team Leader
Only a woman can read between the lines of a one word answer.....
I started out with nothing... and still got most of it left!