aristotle - 9:20 pm on Oct 22, 2012 (gmt 0)
Penguin is NOT working
At the start of this thread, atlrus described one way in which Penguin isn't working, namely that it often fails to catch mediocre websites that are ranked much higher than they should be.
But that isn't the only way in which Penguin isn't working. Because it also does the "opposite", by causing many quality sites to fall to much lower rankings than where they should be.
The overall effect is that Penquin has significantly lowered the quality of Google's SERPs.