any advice and opinions are very much appreciated. I have no idea why my site got heavy penalty from google. It is a very authoritative and established site and never get affected by any google update. However, today the site was heavy penalized...anyone here is in the same situation now and could share some thoughts?
Strive for a natural linking profile. From what I've read, Penguin is targeting obvious and deliberate SEO linking.
Which kind of links have you build to your site? Make sure to go for quality, not quantity! Make sure to offera good user experience! Be consistent!