www, non www and backlinks , need urgent help

Hello everyone,
Its not a big issue but I am confused about a site.When i checked the back links using yahoo site explorer for http://abtollc.com. I found there are near about 5-10 backlinks.
But when i check http://www.abtollc.com i found 500 + backlinks.

1- My friend want me to build links http://abtollc.com/AppStoreAPI.aspx. I am confused whether i should make links for http://abtollc.com/AppStoreAPI.aspx or http://www.abtollc.com/AppStoreAPI.aspx.Are these domains not same ?What should i do give suggestions please.


waiting for replies ...

 

There's no SE-advantage to with www or without www.

I suggest you pick one, and stick with it. Consistency is the key.

 

the above reply is correct, use one variation and stick with it!

I always use www

 

good advice give...

As for checking backlinks, Yahoo will obviously index different links than Google and same goes for every other "tool" you use.

Don't be too fussed with counting backlinks. Rather spend your time building links. Links will come and go depending on what gets crawled and indexed.

 

I believe in google webmaster central you can specify whether they should use the www or non-www version. Obviously, you cannot prevent people from linking to your website with or without www in the URL.

However, You can easily force your website to use one or the other.

In your .htaccess file, add this (untested):

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

Code (markup):

 

That'll work, but it only solves about half of the canonical URI issue. You also need to force the index.ext (where "EXT" is the extension, such as html php cgi asp and so on) to redirect to the directory root.

 

I thought that 301 redirect is sufficient.I was not aware about this.Is there any tutorial or article on internet about this.

 

yeah,,it works in both,,, non www or with www

and i think there is no different effect for our SEO for using www or not

 

There IS a difference - www.yoursite.com www.yoursite.com/index.html yoursite.com and yoursite.com/index.html are treated as FOUR SEPARATE Web pages by the search engines. Can you say "DUPLICATE CONTENT"?

 

Thanks for that bit of code, very helpful.

 

Just use this. Replace example.com with your domain name and TLD, and index.html with your default home page/file extension (like index.php if using PHP). This code will replace the one given to you earlier.

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /.*index\.html?\ HTTP/
RewriteRule ^(.*)index\.html?$ http://www.example.com/$1 [R=301,L]

Code (markup):

 

thanks Dan Schulz.

 

You're welcome.

 

Google webmaster blog recently said they can now find out presence of www.domain.tld/index.html (or php etc. and see if www.domain.tld has the same content. Inspite of that statement I still see duplicate content and different PR for such pages.

You should also set preferred domain in Google webmaster tools (with or without www), stick to one of them and redirect (301) the other.