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Hi

The blog post links to the product page and the product page links to the blog.

I haven't included it as an additional description, I have taken one or two paragraphs from the blog and worked them into the original product copy.

If you're lucky enough to have kept a record of the linking domains, you could search to see if Google has taken some sites out of their index by doing a "site:" search, ie:

site:domain-that-links-to-me.com

and if you get no results, I believe that's because Google has de-indexed them.

If you pay for a lot of content sharing type links, they are likely to be on sites that Google will get round to eviscerating eventually.

What percentage of total links have gone?

SOLUTION:

Options +FollowSymlinks RewriteEngine On

#redirect this type of url www.old.com/index.php?everything-after-the-question-mark to a new url

RewriteCond %{QUERY_STRING} ^everything-after-the-question-mark$ RewriteRule ^index.php$ http://www.new.com/new-page? [L,R=301]

#change the above for every specific url with a query string that you want to send to a specific url

#for capturing the rest of the site's query string urls and sending them to a single page - the home page in this example:

RewriteCond %{QUERY_STRING} ^(.*)$ RewriteRule ^index.php$ http://www.new.com? [L,R=301]

#www.old.com doesn't have a query string so needs its own 301:

Redirect 301 / http://www.new.com

Thanks Sinisa, I have sent the link by private message. An example of duplicate content contains "harmonic techniques".