in the google webmaster tools there's an option to select your domain with www and without www so in this case which option should be selected. does it make any difference in indexing and pr
It doesn't make any difference, as long as you choose 1 and have all links pointing to it. I always choose the www. version as it's the most common way people write links. Always do a 301 permanent redirect with .htaccess from http to www to prevent canonical URL's ie splitting backlinks between the two, as Google sees them as 2 different pages.
you must insert this code to your .htaccess file. RewriteEngine On RewriteCond %{HTTP_HOST} ^seo4fun\.com [NC] RewriteRule ^(.*)$ http://www.seo4fun.com/$1 [R=301] nıte: you must edit seo4fun and com according to your domain
Exactly how he has it, just change seo4fun with you domain name... and the .com with your extension if appliable.