Gary IIlyes from Google revealed that Google’s Penguin update is prepared to handle all kinds of search manipulations. He added that if there is mass manipulation, all the links related to the site irrespective of bad and good ones will be discounted.
There is a massive response on this update via tweets. Many people opined that discounting good links can be devastating for a site.
Pedro Dias, former Google spam fighter tweeted that it seemed like a target issue for him. He added that Google should make it clear whether they are going to discount all the links going out of source site or links pointing to the target site.