Cross Domain URL Selection
First, let us understand what is meant by Cross Domain URL selection -
When a search engine finds matching/identical content pieces on different URLs/websites, it runs an algorithm to select a primary URL among all other URLs and removes them from search results.
What does this mean?
Google lays emphasis on its algorithm to identify the original and highest quality link for the content, and to devalue the other URLs having the same content, further removing them from the search results. The idea behind this is to cut down on duplicate search results, to reduce a lot of copy cat, scrapers, and other unethical content websites. Through this user will be benefited by getting better and diversified search results, not just 10 different URLs saying the same thing.
What did Google say about it?
There are numerous possible causes of the cross-domain URL selection which may include:
Example:
- If the group of URLs contains one URL from a.com and one URL from b.com having the same content, and Google’s algorithm select the URL from b.com, then the domain a.com may no longer be shown in the search results and may see a major drop in search traffic.
How website owners’ will be informed?
To inform the website owners about cross-domain URL selection happened, Google may send a message alert via Google Webmaster Tools (GWT). When GWT detects a cross-domain URL selection is affecting the top pages of the website has occurred, it may send the webmaster a message regarding the same. However, when many URLs are affected by cross-domain URL selections, the webmaster may not send any email or any message for the same URL multiple times. These messages will be sent to the webmasters who have verified the ownership of their website in GWT. For receiving messages it is recommended to activate email delivery of GWT messages.
When a search engine finds matching/identical content pieces on different URLs/websites, it runs an algorithm to select a primary URL among all other URLs and removes them from search results.
What does this mean?
Google lays emphasis on its algorithm to identify the original and highest quality link for the content, and to devalue the other URLs having the same content, further removing them from the search results. The idea behind this is to cut down on duplicate search results, to reduce a lot of copy cat, scrapers, and other unethical content websites. Through this user will be benefited by getting better and diversified search results, not just 10 different URLs saying the same thing.
What did Google say about it?
There are numerous possible causes of the cross-domain URL selection which may include:
- Duplicate content,
- 301 redirects,
- Configuration mistakes
- Incorrect canonicalization
- Misconfigured servers
- Malicious hacking
- Unauthorized copying
Example:
- If the group of URLs contains one URL from a.com and one URL from b.com having the same content, and Google’s algorithm select the URL from b.com, then the domain a.com may no longer be shown in the search results and may see a major drop in search traffic.
How website owners’ will be informed?
To inform the website owners about cross-domain URL selection happened, Google may send a message alert via Google Webmaster Tools (GWT). When GWT detects a cross-domain URL selection is affecting the top pages of the website has occurred, it may send the webmaster a message regarding the same. However, when many URLs are affected by cross-domain URL selections, the webmaster may not send any email or any message for the same URL multiple times. These messages will be sent to the webmasters who have verified the ownership of their website in GWT. For receiving messages it is recommended to activate email delivery of GWT messages.
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