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friendlyfrank
Joined: Sep 02, 2006
# Posts: 313
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Posted: 2008-Jan-15 17:59
I need to setup a few pages on my site for the White paper section and Testimonials. These pdf docs are also present on the main vendor site and as their partner we can use it too. If I use the same material (pdf and case studies) on our site, can google think of it as duplicate material or do I lose any points in ranking ? Thanks
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Quadrille
Joined: Nov 15, 2000
# Posts: 1064
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Posted: 2008-Jan-15 18:07
A duplicate is a duplicate - but there is NO penalty (ie no harm) from duplication ... simply that Google may (sooner or later) exclude all copies bar one.
NO effect on other pages. If the same thing appears on another site, that can, of course, cause your copy to be excluded. Google has no way of knowing which copy is 'best', 'came first' or is 'copyright' - so the process is enigmatic, unpredictable, weird even.
Some say that page rank determines, but it certainly doesn't always. Others say that 'authority' sites win. Which may be true ... but no way to know for sure. It may just be the one the spider found first, and there's no knowing what route the spider took (but it does suggest that good clean site navigation may be worth investing time on.
Sorry for long boring response, but it triggered a few supplementary questions as it went along 
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friendlyfrank
Joined: Sep 02, 2006
# Posts: 313
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Posted: 2008-Jan-15 19:21
Thanks. So this means it will even read my pdf downloadable docs and consider is dups ?
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Quadrille
Joined: Nov 15, 2000
# Posts: 1064
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Posted: 2008-Jan-15 20:12
Google certainly parses PDFs (they often come up in searches) - you often find them with an option to 'display as HTML'
Whether they are compared 1-to-1 with html or other documents, I really don't know* - but I'm sure they'd certainly be seen the same as a duplicate PDF (why wouldn't they?).
*I suspect they do ... but with reservations; html docs usually are surrounded with links etc, pdfs tend to be 'just' the content. That can make a big difference; see 'code bloat'
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g1smd
Staff
Joined: Jul 28, 2002
# Posts: 10438
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Posted: 2008-Jan-15 21:06
They are often not generally compared one-to-one with the HTML version of the document, though I think this may have been tightened up recently.
That is especially true when the HTML document may have been split into individual pages, and the PDF has all the pages in one single file.
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friendlyfrank
Joined: Sep 02, 2006
# Posts: 313
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Posted: 2008-Jan-16 00:09
interesting. In my case it would be pdf (vendor site) vs. pdf (my site) dupe check then ?
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Quadrille
Joined: Nov 15, 2000
# Posts: 1064
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Posted: 2008-Jan-16 00:18
Yes. See above 
A dupe is a dupe!
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g1smd
Staff
Joined: Jul 28, 2002
# Posts: 10438
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Posted: 2008-Jan-16 00:57
If it is an identical file on two sites, then yes, there is some filtering.
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