this site after a redirect has lost all its sites indexed. Im not sure if thats the reason or the reason is that its a subdomain on pricegrabber which is duplicate content http://pcworldcanada.pgpartner.ca/
You can use seo tools if that is duplicate contents... http://webconfs.com/similar-page-checker.php... try this tool and compare if they are duplicate or not...
thanks a ot, i think the page layout and links are duplicate and the site really has no content (text)
If you change your URLs, and if the new URL is duplicate content, it is absolutely vital that you send the proper response codes to the client. If you don't, you risk losing your search engine rankings and credit for inbound links. Below is the code that will do this for you if you are using Active Server Pages: ' Tell the client browser or spider the page has moved for good Response.Status="301 Moved Permanently" ' Tell the client browser/spider where the page has moved to, where ' sNewPage = a string representing the new page. ' sNewPage must be the full URL starting with "http://" Response.AddHeader "Location", sNewPage 'rem Move to the new page. Response.Redirect sNewPage HTML: This is necessary so that your inbound search links to the old page, will all carry over to your ranking for the new page. The code must stay permanantly on your site.
What Corwin said is spot on, you must 301 re-direct the old to the new and Google will update it's index with the new URLs without incuring a duplicate content penalty. How long Google takes to update it's index with the new URL's depends on your page strength.
I ran an experiment on this back in February on a site that gets 80K+ visitors/month and is spidered by Google almost daily. Without the above code, after two weeks the new duplicate content page still was not indexed and the old page was still in the Google index, even after being Google spidered about 10 times. With the above code sending the 301 Redirect, the new duplicate content page was indexed after the second Google spider visit (after two days).