Msg#: 4171278 posted 6:21 am on Jul 16, 2010 (gmt 0)
Hello Everyone, In GWT i have added my sitename in both way like: sitename.com and www.sitename.com and i have verified both domain and also set preferred domain and selected "Display URLs as www.sitename.com"
But one seo my frnd told me we should add one sitename no need to add both domain with and without www.
Msg#: 4171278 posted 6:44 am on Jul 16, 2010 (gmt 0)
Hi pradeepkhutale, first of all Welcome to WebmasterWorld!
There shouldn't be any negative effect of adding both domains to GWT. Adding both and using the option "Display URLs as ..." is an extra signal to Google that both domain names are in effect pointing to the same content and one of those is the preferred display version. It may help to prevent erroneous behavior while indexing your site.
Msg#: 4171278 posted 7:09 am on Jul 16, 2010 (gmt 0)
Google knows that sitename.com and www.sitename.com exist. In the past the algorithm tried to determine on its own which was the preferred domain and that didn't always went right. Some sites were indexed with half of the content as www.sitename.com and the other half as sitename.com. Actually one of the measures they took to prevent that problem to happen was to ask webmasters to add both domains to GWT and use the preferred domain display setting. You should be safe having both domain versions in GWT, as long as you make sure you use the preferred display setting.