Google’s Wonderwheel

Google is trying out a new feature.  Click on other options on a search and then try the option called “WonderWheel.”    Here is a Wonderwheel result for the concept “Dog Parks.”

Google's WonderWheel for "Dog Parks" May 5, 2010

I’m curious if anyone has advice on how to optimize your site to be classified in the wonderwheel  — can I use metadata,  words in text, seo tricks?

If anyone has insights into how Wonderwheel works, please post or contact me offline.

~  Marlene Rockmore