FranticFish - 7:22 am on Nov 15, 2013 (gmt 0)
Thinking more (stewing would be more accurate) about this comment, and the whole position on negative SEO. I have to say I'm staggered.
Ignore the links? Guaranteed least harm done to anyone. Spammer cannot benefit. Target of negative SEO cannot be damaged.
Notice these links, penalise, and then TELL PEOPLE THAT'S WHAT YOU DO? Encourage spammers to try. Absolute certainty of some sites somewhere being cases of mistaken identity.
This is not only naive programming of your algorithm, with the desire to be some sort of internet vigilante more important than your responsibility to innocent websites that might be caught up in this, it is also naive public relations.