Now google is come up punishment because google has created too many video's and article to save the search results and do't do spam extra but everyone just going their own way and doing whatever they want to just get rank higher with their top business keywords.
as google has updated penguin the search result are showing different results. as i have noticed that most of the website got penalize due to duplicate content or website as far as i have analyis and found that there is nothing new in this update. all are same thing like duplicate content & spam link etc which is already mentioned by the google but now google come up with punishment. it means you can not do black hat and don't try to make search engine fool.
also i have noticed that google has punish some website in which google has wash out the result of those spammy website but still google has given a second chance to get back in search results because google just wash out the results not whole website suppose if google would do a "out of index" action then what! means "you are gone".
so if you are affected by this update then don't panic just try to maintain the standard and avoid the black hat & remove the black hat work which you did not in past. hopefully google will help you to get back in search engine results.