To address potential duplicate content penalties in Google

An easy step that can help avoid potential ranking loss from duplicate
content reprimands is to make sure there aren't four or five different
URLs navigating to the same page. Google views these two domains below
as separate entities and if the content is exact, they can take
punitive measures against the offending site.

mysite.com
http://www.mysite.com

To address potential duplicate content penalties, manipulate
your.htaccess file and redirect secondary domains to the preferred
listing. This means every time a web user enters the mysite.com
address without the preferred prefix, they are redirected to the
correct domain.

Add the following code to your .htaccess file (change the "mysite" to
your domain):

RewriteEngine on
RewriteCond %{HTTP_HOST} ^mysite.com
RewriteRule ^(.*)$ http://www.mysite.com/$1 [R=permanent,L]

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