google index both www and non-www version of the site - is this normal?

Try google for "thai love lines"

You'll see that some of the search result use "thailovelines.com" while the other use "www.thailovelines.com" - is this normal?

My problem is, it seems google webmaster tools see www and non-www version as a different site (they have different number of backlinks, etc) - so I worries whether this affect phenomina my SERP?

What caused this, and are there anyway to fix this? I'll prefer if google only list www version btw.

Any thoughts, resources I should read?

 

Use .htaccess to redirect non-www to www.

Use this Code

RewriteEngine On
RewriteCond %{HTTP_HOST} ^mysite\.com [NC]
RewriteRule (.*) http://www.mysite.com/$1 [L,R=301]

 

Try to use one version is good for the website.

 

Yes it normal and I wouldn't worry about it..Why..because you are ranked period..

 

it's normal but not good. you should use canonical meta

 

Good advice. Immediately redirect the one with least backlinks to the one with most backlinks. Then stick with one version