To those who say that the OP should do this because it will add value to the community by providing knowledge of Negative SEO I think are a bit misguided. The current consensus in the industry is that Negative SEO is real, and it works. No point in beating a dead horse, what google says is not always reliable. It is much better to keep one's honor and beat your competitors by providing value greater than theirs. It is no good to kick a man when he is down.