Recently, I was noticing that certain sites had special listings in Google searches. For instance they had a category break down or breadcrumb of the page. I.E. - "Buy > Hardware > Hammer > ABC Company Steel Hammer."
So with a little digging, I was able to find the following article on rich snippets:
These rich snippets are not guaranteed to show in the search results, but gives us the chance to have much sharper looking Google search results.
I immediately wanted to implement this on my e-commerce site: ThePlasticBrick.com
To see it in action:
To see the technical specification of Rich Snippets, please refer to the afore mentioned article from Googl.
They also provide a testing tool: