Wilburforce - 6:29 pm on Jan 23, 2013 (gmt 0)

- Would you recognize this site as an authoritative source when mentioned by name? - Does this article provide a complete or comprehensive description of the topic? - Does this article contain insightful analysis or interesting information that is beyond obvious? - Is this the sort of page you’d want to bookmark, share with a friend, or recommend?

That's all very well, but when the page that ticks all those boxes generates a lot of unsolicited backlinks that all use the page subject as anchor-text, Penguin finds an unnatural link pattern.