[ignostic]

Sorry, but not a chance in hell that Moz got hit by Penguin.

1) You can look at their links yourself, if you have any clue how Penguin works, and see that it's not even close to spammy enough to get hit by any Penguin algorithm.

2) Their rankings for key terms remained solid after Penguin. [1] The very definition of a Google penalty includes drops in rankings.

3) In this case the Penguin penalty would transfer across with the 301 redirects they've put in place.

[1] http://suite.searchmetrics.com/en/research?acc=12245&url...

[James_Duval]

I've got to admit, I didn't check whether Penguin 2.0 was substantially different from 1.0 before I made that idle speculation. I thought it might be looking at some different, but related, over-optimisation style stuff.