Which is important in SEO old back-link or new unique content?
All are good, but if you link to relevant and quality sits then it would be a strong backlink for your site, there is no doubt to it really.
As er my seo experience both are important..They both are incomplete without each other.
as per my experience in seo i would ike to prefer unique content which is more effective because it's possible old back link is not fulfil the demand of new updates of seo.
Google always love unique content.
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