All of my sites are uniquely hand written by writers and images are good but I have received penalty notice from dear google. Penalised all sites on GWM account even some of them are not my sites. What would be the best action? Because I don't think all sites are bad but how to find the problem one? I already responded with some good sites/blogs showing there is quality content and asked google to give detailed info. Would this work? It is too much work to update every site and send request. Any ideas?