seo - Using noindex and nofollow to avoid duplicate content penalization -

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scenario:

i own website original content. support categories use creative commons licensed contents, is, of course, duplicate content.

question:

if want avoid penalization duplicate content, statements true?

  • i should mention original author fair human being.
  • i must use meta noindex avoid robots fetching content.
  • i must use cannonical url metion original content , it's author.
  • i don't need use nofollow meta along noindex, because has other purposes.
  • i don't have use rel="nofollow" on incoming links inside site point duplicate content, because won't indexed anyways, given noindex meta tag.

i did research , got it. not sure this, , understand before applying @ all.

thank you.

in order avoid penalization duplicate content, can of course use meta noindex , rel="nofollow". here syntax:

<meta name="robots" content="noindex, nofollow">

this tells robots not index content of page, and/or not scan links follow.
there 2 important considerations when using robots <meta> tag:

  1. robots can ignore <meta> tag. malware robots scan web security vulnerabilities, , email address harvesters used spammers pay no attention.

  2. the nofollow directive applies links on page. it's entirely robot might find same links on other page without nofollow (perhaps on other site), , still arrives @ undesired page. don't confuse nofollow rel="nofollow" link attribute.


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