Google is indexing my site twice as www and and none www. Okay i already doing a 301 redirection from the gamehaxerz to www.gamehaxerz. But in google webmaster i have both submited do i need to delete the none www or the 301 will fix every thing?
Submit both the www and non-www in Google Webmaster Tools, then tell Google which one you recognise as "canonical" in the options provided in each domain profile.
Log onto your google webmaster central and set it so that google indexes your www. domain only. Also, I've noticed you spamming your forum everywhere.
I've tried both the forms myself, in the end chose to stick to www. Some people tend to overlook this, but it's best to stick to one format and update all (or as many as you can) backlinks to that format, whether non-www or www. The key is to be consistent. Google will update their index in time. Give it a while, no need to panic.
what if i'm not aware of this? is my site would be penalised by google? is this lead to duplicate of content of my site?
If you referring to submitting to webmaster tools? Yes you will need to verify your www and non www versions of your site, pretty easy if you have ftp access. Or if you mean anchor text back links are pointing 5 to your www and 10 to your non www version ie <a href="http://yourdomain.com">Anchor Text</a> Yes there is a difference. It means your seo and link building efforts are being diluted between "2" sites a www version and a non www version.
Okay know theres a bigger problem. on google webmaster the site gamehaxerz.com has more back links then www.gamehaxerz.com the www one has no backlinks
Yes is true so i notice that i when to backlink check and the domain with the none www has 27 back links and the www has 7 back links.. so should i start building all my back links as www?
uless and until you are not intending to have other subdomains on your site , you should try to build links for just your main domain name