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Yap, You are in right way. I mean buying backlink is not good for site. But its very dificult now that create natural backlink. People will always advise you that create good content !  But we know that, natural backlink is very powerful. Actually i used footprint for creating natural backlink. At first you need to track your compititor then try to create backlink there. Besides, you can try this tool for finding natural backlink. Now i am using it. Its helping me.  i think, it will be help you for creating natural backlink.