I can confirm I got hit for 2 sites, both were EMD, however they had max 10-20 backlinks each and were ranking on page#3 I never worked on them.
Now they are not on top 50 pages. Makes no sense. However I see Google has given serious love to YouTube. Should we all accept it?
It is sort of harsh because one of the EMD I had we paid a big sum for. Content was all infographics+social media promotions nothing sneaky. Even a Google guy tweeted about our site.
Just got to eat it up ah?
My clean sites also got hit my personal name which I didn't build backlinks beside those 10 or so links it had.