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today i have created inbound link report using Link Research & Analysis tool and i found that there are number of spam inbound link to my website from lots of blogs and other sites Which anchor text are not relevant to my site. It contain some abusive words in anchor text like "viagra expiration date" and other. I want remove these irrelevant backlinks. As there are very high number of links approx 9000, its almost impossible to remove the links manually. Is there any way to remove and restrict those backlink? Whats steps required to protect any negative affect  to my website? Please advice asap.