Thaparian - 5:20 am on Oct 24, 2012 (gmt 0)
Can you see from any stats package the date your site(s) got hit?
First hit 19th January, Page Layout Algorithm.
Second hit 24th April, Penguin update.
Dropped traffic over the next few months, no sudden drops.
I think I didn't had way too many ads above the fold, but still I reduced the ads a lot, even tried having no ads above the fold, no recovery. It feels it has nothing to do with the ads.