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Hi there 1. Yes, and go through a backlink audit - what needs to be removed / disavowed? 2. I used this combination of information (as well as Majestic / Ahrefs) for multiple audits / manual action clean ups 3. You can use tools like LinkRisk to assess your backlink profile and score individual links. All in all - the best way to define a bad link is to use your own intuition and common sense: Does this link help my website? Is this link relevant to my website? Would I trust this site (that's linking to me) if I landed on it? Is the website or content in which I am being linked from topically relevant to my website? If you check metrics - does anything about the metrics (domain authority, page authority,Majestic, SEMRush traffic/ranking data, etc) make me feel uneasy? Hope this helps! Good luck!