If we post blog content Eg:blog.mysample.com) to (www.thesample.com), will this be a duplicate content or is it count against us?

Dani AI

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Short answer: yes — identical pages at different hostnames (for example blog.mysample.com and www.thesample.com) are treated as duplicate URLs and will compete with each other in search. That can cause Google to pick one version to index and show, which lowers visibility for the other copies. This is consistent with noting the duplication and with 's point that the business purpose determines whether it matters.

Practical steps to avoid problems:

  • Pick a single canonical URL for each piece of content and have duplicates point to it with a rel="canonical" tag. Cross-domain canonicalization is supported but follow the same signals (sitemaps, internal links).
  • If possible, 301-redirect duplicate URLs to the canonical location so crawlers and users see one address.
  • Keep sitemaps and internal links consistent — point to the canonical domain.
  • If duplicates must exist (syndication, multi-site setups), add unique value (introductions, local context) or ask the publisher to add a canonical back to the original or use meta robots noindex where appropriate.
  • Monitor which URL Google chose as the canonical using the Search Console URL Inspection tool and adjust signals if needed.

Google documents how duplicate content and URL consolidation are handled; follow those best practices rather than relying on hope. See Google on duplicate content and Google on consolidating duplicate URLs (canonical/redirects). For a practical SEO primer, see Moz on duplicate content.

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If you post same content in two different blog then it will be duplicate content otherwise not.

Depending on the purpose of your blog articles. Are they meant to be unique, quality, new content for the Internet? Something intelligent to offer the world. If not, then duplicate to your hearts content and hope for the best.

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