tedster - 3:09 pm on Oct 4, 2012 (gmt 0)
Just because the final effect is sending some URLs to -950 doesn't mean it's "the same penalty." The original penalty was triggered by over-optimization or too much old-school SEO. This -950 drop is apparently triggered by something different.
It seems to be a problem where an exact match domain was ranking mostly because of the domain name but Google decided the website offered poor content. What we don't understand yet is how that "poor content" decision was made. How is it different from a Panda decision, for example.
Because Google updated the Panda algorithm just the day before the EMD Update [webmasterworld.com...] and continued to roll it out for another 3-4 days, it's not easy for webmasters to separate the two updates in their analysis.
However, I don't see how we can find real answers to act on without separating the two. Maybe just returning to the original Panda discussions to evaluate the "shallow content" effect will help. See [webmasterworld.com...]