
For sites that have legitimate reasons to duplicate content across different websites, Google offers a solution. Google announced its support of the cross-domain rel=”canonical” link element. Google offers these tips for handling content.

Tips for handling cross-domain content duplication
- Choose your preferred domain
if confronted with duplicate articles, search engines will generally take one version and filter the others out.
- Reduce site duplication
before starting on cross-site duplicate questions, deal with in-site duplication first.
- Enable crawling and use 301 redirects
redirects send visitors and search engine crawlers to your preferred domain and make it clear which URL should be indexed.
- Use the cross-domain link element
Situations where it is not easily possible to set up redirects. Like when moving your website from a server that does not, feature server-side redirects.
Using these tips will help your SEO ranking from dropping.
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