Froogle is Google’s comparison shopping engine. It debuted a few years ago and has lived in beta ever since.

Froogle just received it’s first major upgrade in quite some time with the integration of Google maps into Froogle based on certain search words.

If you search for a product near city, then the map is pulled into the results. Even a search for city product does not pull map results at present. (Expect this to be fixed eventually, or a more intuitive way of seeing products overlayed on a map).

Alternately, one can also use the ‘local shopping’ vs ‘online shopping’ tabs to determine the shown results.

If you are a merchant who wishes to sell on Froogle, the instructions from Google are here. Many shopping carts these days can also export Froogle feeds which make uploading your entire product inventory quite easy.

Related Resources:
Froogle on Kelsey Blog
Froogle Feeds work with Google Base – Webmaster World
SEO Roundtable Blog Post