I believe my sites were affected by Penguin 'cause since about the time people started wailing I noticed that one of my sites (my most valuable) had been dropped alongside the others. Interestingly, after logging into Analytics a couple hours ago, I discovered that I had some traffic from the search engines. Then I checked for most of the keywords I ranked number one on Google for, and almost all of them had returned. While I don't know if this is permanent or not, I would like SEO experts to give some valuable advice on this here. Should I now go ahead to create backlinks? I didn't do anything to my site after Penguin.