I was hit on Nov 26th , with several subdirectories being removed for the index
I had not being doing any external link building etc, all content unique.
But there is one thing that had been done to the site based on Matt Cutts video on internal linking and that is I added keywords to a proportion on internal links within the site.
4 days later, I lose several subdirectories.
I have to assume I have crossed the Penguin boundaries and hence the punishment.
I have corrected the links almost immediatly and yes I know Google will not access these pages as reguarly as normal.
So I gave been testing using fetch googlebot to tell google that I have changed the pages back.
Of course these pages have not yet returned, so wondering if anyone has done this before and did it work?
Is it still a cases of I just needed to wait until Google indexes naturally, or the fetchbot would have worked, and there are other things at play?