Cname Mapping & Dupilcate Content

[CeeC-Blogger]

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[SorinaDascalu]

Google will see this as duplicate content because it is exactly the same content....correct?

If you need to have this just to facilitate a vendor, use rel="canonical" on the duplicate page to specify the original source. Rel canonical also works cross-domain, for more info see this official post on Google Webmaster central blog: http://googlewebmastercentral.blogspot.ro/2009/12/handling-legitimate-cross-domain.html

[CeeC-Blogger]

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[SorinaDascalu]

I personally use as canonical the URL of the page that was already indexed, that Google already knows of.

So in your case on ask.charter.com I would put 
.

But if you want to use it the other way around I don't think it's a mistake, because on Google Webmaster Support they define a canonical page as:

A canonical page is the preferred version of a set of pages with highly similar content. (source here)

So, the canonical page is the preferred one, not the original/first indexed one.

[CeeC-Blogger]

Thanks Sorina, but we would like the http://ask.charter.com/ to be indexed. What should we do in that case?

[MikeTek]

Excuse my jumping in here.

You would simply apply the reverse of the example Sorina shared above. You would include  in the element of http://charter.intelliresponse.com/. This solves the duplicate content issue and points all authority to http://ask.charter.com, which will rank while http://charter.intelliresponse.com/ will be removed from the index.

Best of Luck,
Mike

[CeeC-Blogger]

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[MikeTek]

I would recommend changing the links. Rel=canonical should carry across all authority for charter.intelliresponse.com to ask.charter.com, but you're still better off pointing all links you can change to ask.charter.com directly.