The Core

Quite interesting:
http://support.google.com/news/publisher/bin/answer.py?hl=en&answer=68297

Now just got to figure how to implement this in Wordpress - just been trying a few attempts to populate this automatically with tags and categories outside the loop, but not succeeded so far.

Cool

It would have to be just adding tags to the page? Easy?

http://codex.wordpress.org/Function_Reference/wp_tag_cloud

Welcome back 500 word meta tags on 100 words of content pages. How we have missed you

Yea, but I wonder who will actually read this part though...

You can add up to ten phrases for a given article, and all keywords are given equal value. For instance, the first keyword is not considered a stronger signal than the tenth keyword.

And it is only for sites that have been accepted into Google's New aggregation system so completely useless in the real www

Good source of Authority that.
A nice, easy to mange collection of sites that G can completely trust/monitor