Subdomain and domain interaction

Discussion in 'Black Hat SEO' started by Kralj187, May 23, 2016.

  1. Kralj187

    Kralj187 Senior Member

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    If main domain and subdomain are well interlinked, will a strong external backlink to a subdomain also help the domain (and vica verse)?

    What if the subdomain gets penalized, does that mean the main domain will suffer a penalty as well?