Jez123 - 11:17 am on Jan 28, 2013 (gmt 0)
Definitely something to do with Penguin but whether it's an update or refresh or just another block of concrete tied to my neck, I am not sure. SERPs are very shaken up in my niches and my Penguin hit site has sunk even further for what was it's main SERPS. Longer tail stuff seems to be holding for now though. I am seeing seemingly non penguin affected sites suffering too but no idea why.