Here's the corresponding tweet from Matt Cutts, Head of Webspam at Google: https://twitter.com/mattcutts/status/337586357822169088

This looks so open to abuse and manipulation. An anonymous form where anyone can drop any link?

Is this Google - Showing face, trying to make people feel involved in their algorithm - Pattern matching submissions against their own computed ideas of what is and isn't spam - Genuinely looking for data, and this is the best thing they could come up with?

Google rolled out 'Penguin 2.0' today (http://www.mattcutts.com/blog/penguin-2-0-rolled-out-today/), an algo update to target websites with manipulative link profiles.