Hi Cyrus, just saw this!
I was actually referring to homepages (should have clarified that), and I'm seeing it a lot lately.
This pages share two common factors, they usually have spammy looking link profiles, and they don't rank well for their main keywords.
I've been also seeing this on expired domains that have a huge amount of backlinks, one of my guesses is that they are being left to expire because of a penalization.
For the information I could find (not much really), it seems SEOmoz metrics are cumulative in nature, so you could have high metrics with tons of lousy links, right?
If that's the case, it's a great way to find out if a domain has been penalized or somehow demoted by Google, just by comparing the metrics, what do you reckon?
What else could be causing this kind of incoherence?
Thanks!