My mate has a blogspot that he is redirecting to his own domain; now that Blogger has that facility. But it only goes to http://www.domainname.com and not http://domainname.com He did a redirect in GoDaddy so everything points to http://www....but how can he make "both" URL's usable so http://domainname doesn't show as http://www.domainname.com
If you dont do the above, then search engines tend to consider both sites as different sites which may be termed as content duplication. This may result in either supplemental results or in worst cases, even banning of the site.