Google is incorporating the “more options” that where previously hidden under “show more options” in the main search window in the main search.
Here’s a few screenshots
Google 6-5-2010
Google wonder wheel
Google video
Google images
They have also introduced “fewer shopping sites” and “more shopping sites” links – just like the old Yahoo shopping slider half a decade ago… I really liked that btw Yahoo!
I spent half an hour looking for info on site hierarchies – but evidently there isn’t much to it. You just need to have breadcrumbs in your pages and Google will pick them up.
The information in these new hierarchies come from analyzing destination web pages. For example, if you visit the ProductWiki Spidersapien page, you’ll see a series of similar links at the top, “Home> Toys & Games> Robots.” These are standard navigational tools used throughout the web called “breadcrumbs,” which webmasters frequently show on their sites to help users navigate. By analyzing site breadcrumbs, we’ve been able to improve the search snippet for a small percentage of search results, and we hope to expand in the future.