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I think it's a matter of preference. Where SEO comes into play is www results getting indexed as different from non www results. As a safety measure, I might add this into your .htaccess if you are on linux: RewriteEngine on RewriteCond %{HTTP_HOST} ^mywebsite.com RewriteRule (.*) http://www.mywebsite.com/$1 [R=301,L] This will force all non www traffic to www