Have your website ever been affected by negative SEO?

Hey blackhatters
pervertsread on negative SEO here on BHW, guy is talking about the morality aspects that I stick with as well.
But here in this thread I would like to see people's experiences with Negative SEO - from the good guy's side

So if your website has been affected by competitor's negative SEO
campaign please share your story with us.


Why I've started this thread? I just want to dig into the problem and figure out whether it's that serious then work out
possible solutions.