If I forward my old domain to a new domain, and the old domain has a lot of backlinks, will the new domain gain the link value?
Yes, it will transfer link value with a 301 redirect. You may lose some of the anchor text value, but the page rank value will pass.
Thanks. I did the domain forwarding in cpanel, is that the same as 301 redirect? Will that have the same effect on passing the page rank?
Make a file called index.php and put this code in: <? Header( "HTTP/1.1 301 Moved Permanently" ); Header( "Location: http://www.new-url.com" ); ?>
You can check what the domain is returning at http://www.seoconsultants.com/tools/headers.asp. I don't think the domain forward in cPanel does it correctly. Also what Wyla said will work if you don't have links to deeper pages.
Thanks I used that tool to check pages, and all the pages on the old domain has "HTTP/1.1 301 Moved Permanently" message,so it's working, right?