netmeg - 3:45 pm on Mar 3, 2011 (gmt 0)
Insofar as I can tell, none of my sites were hit, and a few have experienced small bumps upward.
However, this last update was enough to make me sit up and take notice, and think about what I can do pro-actively so that I do not get hit in the future.
So the first thing I am doing is taking the same advice I've been spouting in the AdSense forum for years - take an objective look at my site, and measure percentages.
If nav + ads + header + footer > content; then fix.
If nav + ads + header + footer < content; probly ok.
(that's probably not ALL I will do, but it's where I will start)