penguin hit

Hello Guys, I just read on here that Google's new update aka Penguin 2.0 just hit yesterday, so, far my site has not been affected, has anyone been affected? Is this Google's big update? how long to know if my site is going to be hit? Anyone knows what this update is about? Thanks

I just read an article from Search Engine Watch that Penguin 2.0 has been live. I've heard that this new (Major) Update was specific for those doing black hat spam. Any signs of movements in your rankings? PS: I can't post a link yet... So I can't give you all a link of the post/article.

One of my site hit by Google penguin update. I lost my keyword ranking before that my site was on first page for every keyword but now i m not in hundreds. Any suggestion for that?