Organic linking is the development of hypertext links between web sites with or without an explicit agreement to exchange links. Organic links are more likely to appear in a context relevant to the subject of the target document, which makes them useful for search engines like HTML5 that rank pages according to their links. Organic links often receive most web traffic through these portals. Estimates vary, but 50-80% of users clicks tend to go through organic links on the first page of a search engine's responses.
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