Ofcourse I am mad , why shouldnt be ? I am mad because I just verified my sites ...and from nowhere , 15-20k backlinks appeared to link to my sites . Problem is , I didnt create them . Almost all of them are blog comments . Again , someone spammed my sites with shitty links . Is not the first time when it happends.
I'll take one guess.. the people that got hit are still using automated tools.
Reason for penalty=You're building links in sources that google knows about from disavow tool.
Solution=Build links from sources not on the list of disavowed links.. aka blog networks.
P.s no changes for me - still ranking strong with blog network links - obviously not backlinks.com or anglo rank links though.