mhansen - 7:01 pm on Oct 22, 2012 (gmt 0)
@mhansen, your sites have the same problems like my sites (similar profiles etc.)?
No. We have 1 site negatively affected by Penguin last April 24th, but do feel it is a "End of Results" penalty/filter or whatever they call it. But we have seen small networks of sites burned to the ground in the past, and the when a group of sites loses ranking at the same time, you have to list out all the common traits as part of the discovery process.
I feel it would be very naive to assume Google did not look through our WMT's account, Adsense account, Analytics account etc... if they find one site in violation of their webmaster guidelines.