Citat:
Duplicate content in 60 seconds:
* Determine whether your site is experiencing intentional or accidental duplicate content or both.
* If intentional, block abusive IPs, detect user agents, block specific crawlers, add copyright information to the content, request the duplicate site remove the content or take legal action.
* If accidental, control URLs through .htaccess, client-side 301 redirects, parameter or variable reduction, 404 pages and consistent linking strategies. Also, don’t duplicate pages in the secure and non-secure areas of your site.
* If you still experience a problem, communicate with the search engines, they are pro-actively working on a solution, but need examples and suggestions to better handle duplicate content.