Add microdata tags from schema.org (supported by Google/Microsoft/Yahoo)
Microdata rich snippets make the product and review information understandable for machines. If you want I can send you a template I made based on Inchoo's Boilerplate in which I added (among others) Microdata tags. Let me know!
Matt Porter commented
I was about to mention Inchoo having a nice tutorial on this, looks like Joost beat me to it :)
Joost van der Laan commented
By the way, you can see the live store which uses the template on http://xseasy.com/