This neat little trick will force all browsers that are trying to access your website from domain.com into a standardized gateway of www.domain.com for increased search engine consistency, as well as a consistent aesthetic appearance to regular users.

Add the following snippet of code to the .htaccess of your public html directory where you would like to use this.

RewriteEngine OnRewriteCond %{HTTP_HOST} !^www\.RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

Voila, 301 forwarded to the same homepage every time!

(BTW, this also prevents having such a varying pagerank between domain.com and www.domain.com some of the time.)