McMohan - 9:00 am on Jun 29, 2012 (gmt 0)

jinxed, to my understanding Penguin's main focus was on backlink profile, as on-page factors were to Panda. Yet, I agree with you in the sense that it is not just about backlink profile. Certain on-page factors are needed to validate a website's attempts at manipulating ranks, such as presence of the keyword in Title and Content that is also present on a majority of the inbound links' anchor text.