WWW vs Non-WWW
During the recent Page Rank update my friend JohnTP saw that http://johntp.com had a PR of 5, but http://www.johntp.com had only 3.
This mainly happens because search engines see this as two different domain names. The best way fix this error is to redirect your URLs. I personally don?t prefer www. because it is deprecated by the search engines
How to Fix ?
Just change yoursite.com to your website?s URL and add following code to your .htaccess file (found at your website?s root directory)
RewriteEngine OnRewriteCond %{HTTP_HOST} !^yoursite.com$ [NC] RewriteRule (.*) http.yoursite.com/$1 [R=301,L]
This will redirect all the traffic from http://www.yoursite.com to http://yoursite.com
[tags]Page Rank, SEO[/tags]