So I started tracking rankings on 164 of eHow's top keywords (selected based on SEMRush report of their most-valuable, SearchVol * CPC).

Anyway, here's the downward movement since the algo started rolling out:

http://www.google.com/search?q=how+to+build+a+robot+from+scr... (-1 ranking)

http://www.google.com/search?q=eurotop+bed (-1)

http://www.google.com/search?q=watch+live+cable+tv+online (-1)

http://www.google.com/search?hl=en&q=find+answers+to+cro... (-1)

So while this may have hit eHow to some degree, 4/164 doesn't seem like a massacre. That said, seoMoz only updates rankings weekly, so maybe next Wednesday will be a different story.