diberry - 4:32 pm on Apr 29, 2013 (gmt 0)
I believe I'm seeing some improvement in the past couple of weeks.
1) Some of my pages that left the index altogether (for their top search terms - they're still in there for long tail queries) have suddenly reappeared at, like, #150. I used to rank #1-3 for these terms, so it's nothing like a full recovery, but it's something.
2) My sitelinks have returned. I don't know if that means much, but they disappeared shortly before Penguin.
3) No overall improvement in actual Google traffic, however, the other engines are liking me better. They seemed to play "follow the leader" somewhat after Penguin, and now they're ranking me better suddenly too. Interesting.