The question I have is also about identifying which links are particularly bad.
I was hit by Penguin long I received the mid July "unnatural link" notice that everyone seemed to get where the language was later softened.
I wish I had some feel for the progression of the Unnatural Link notices, since I received mine later than some batches that went out earlier. Should I assume that the threshold progressively got more strict? Or should I assume that it was a new link that was found close to that date that precipitated it?
My links aren't too bad, and none have been solicited in more than 5 years. When looking at which links to disavow would you be looking more at the timeframe around the notice? Or is the timing of a notice more or less irrelevant?