What is quality backlink? The criteria of a high quality bac

[richardmsmith]

Backlink in content
Backlink content is toxic
Backlink in the article with related content
Backlink has many links
High Pagerank
High PA
Dofollow backlink
Backlink brings a lot of traffic
Backlink has few links out
Backlink has many social interaction (Like, share, G +, Tweet ...)
Backlink tail GOV, EDU (Bonus)