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Content guidelines
Content guidelines
Site title and description
Blocking Google
International
Mobile
Images and video
Pagination
Meta tags
About rel="canonical"
rel="nofollow"
Canonicalization
Author information in search results
Link your content to a Google+ profile using rel="author"
Automatically generated content
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Doorway pages
Scraped content
Creating pages with malicious behavior
Hacked content
Guidelines on user-generated spam
International
Multi-regional and multilingual sites
rel="alternate" hreflang="x"
Sitemaps: rel="alternate" hreflang="x"
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