Some people in the SEO community argue that making backlinks through commenting is not a great way to boost your domain authority and backlinking strategy but some bloggers do use it.

I agreed what you have said in your response but I think the first two years are the hardest rest, you don’t need that much backlinks when your blog gets more domain authority it gets easier to get ranked.

In one research it is found out that “Longer form content get more traffic as well as backlinks compared to content that has an ordinary length”

I hope this will helps.

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