| I think you need to break your argument into two parts. 1. People ARE creating spammy links that point to competitor sites in the hopes of damaging their search rankings. - You have proven this. 2. As a result of a competitor creating spammy links to your site, your rankings in Google have been permanently negatively effected. - I don't think the data you present is sufficient to prove this. Correlation does not equal causation. Lots of moving parts in Google's algorithm, the internet, your site... Did the site get warnings in Webmaster Tools? Did you go through the disavow links process? How long ago? |
I use negative SEO regularly to drop sites out of the top 10 in Google. I only target low quality sites that shouldn't be in there anyway, but Google in all their algorithmic wisdom has ranked them, so... I knock them out.
Low quality 5 page Adsense sites shouldn't outrank actual, legitimate businesses so it's just a case of click click, BOOM. I never target the actual competitors of my clients.
Negative SEO is part of the toolkit of any competent SEO professional nowadays. It just has to be.