basically you have a google profile that you can edit and it helps google personalize the search.
I’ve edited my profile, I believe yesterday or the day before that, hope you can too!
Wednesday, February 03, 2010 by Dave Winer.
WIthout any fanfare as far as I can tell, Google has unveiled one of the most signficant, far-reaching and basically good features in its core search product.
Now, in addition to presenting the pages ranked in order of algorithmic importance, it also shows you what people you know have to say about the subject.
How does it know who you know? Based on some very simple information you may have entered into your Google profile. (I called this two-way search in July 2009.)
via Google’s two-way search is good for the web. (Scripting News).