Ok folks, I just want to hear your opinion about the "real" Google penalties. You know there are many rumors out there about this kind of stuff and I want to know something from you. Okay, for me the only "real" Google penalty in "de-index". I don't really believe that there is a "duplicate content" penalty, exact match domain penalty, Google Sandbox, or penguin attack or whatsoever. So for me the only real penalty is Google de-index. Though they have not said that this thing is a penalty, I think there is no worst scenario that can happen to your website than this. If your website got hit by an algo update, you can still work to bounce it back to where it was. But if your site is completely removed from Google database, then it's the end of the game for your site. That's why I called it "real penalty". So it's time now for you to let us know what are your thoughts about it!