pradeepkhutale - 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.

SO frnds pls suggest me i m right or wrong.

if i m wrong pls suggest me what should i do.

thx in advance