What are the best tools to use for earning backlinks for SEO?

As everyone knows that the PR is dead and now Google focus on relevancy of the back links so you can measure the relative of the URL by watching its Page authority. It actually represents the number of relevant back link that a website or a blog post have.  You can use MozBar to find the best platforms to share your links. It’s a free extension and it is available for Chrome and Firefox.

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