SEO needs to walk a fine line to avoid black hat practices and page duplication on the web for each web site. Simple server settings that effect the search outcome can get you black listed. This is especially true if you have more than one domain name. Google recommends a 301 Redirect in your .htaccess file, which is the code for a permanent redirect. Let me explain some black hat practices. Feel free to sign in and share your comments through the comment link.