Guys... Please take a moment and listen to me for a second.
First.. how negative SEO works... you start to blast the hell of a site with enormous quantity of backlinks from SB/Xrumer.. etc and try to force G to penalize that website right?
Well this is my exact SEO strategy and for me it works, not as a negative seo but for actual seo that help my websites ranking.
To be more specific I use to create backlinks SB blast, blasting tone of links a day 200k-300k per day.
Is true that some time I drop for some time but the key is continuity. Is true that if I drop and stop building backlinks the website will remain there, but if I continue to build backlinks (sb backlinks) in the same rate and add some diversity in the anchor I start to rise right away and even rise higher.
Is true that if your competitors build only manual backlinks for the past 2 years and you blast them with 1 mil website in a month they will be penalize... BUT...
1. If they will continue to blast their website after you stop they will rise again and even stronger
2. If they will do nothing and continue to theyr old strategy in 6 month maybe a year after they got out they will be back an stronger
Is true that if you are in the IM niche a 6 month drop will affect your earnings but here I'm talking generally. I do my seo for offline business website that have the patience to wait so when they get there they will stay there. And if you do not want to wait... buy a sb license, 10 private proxy a vps and start the work and you will be back in a month.
As I said.. This thing I'm telling you from experince and testing. I said testing, and not testing for 3-4 month but for almost 2 years now.