If you google a big shopping site, the site's main product categories will be listed by Google besides its home page, see
Newegg. The Google result page lists the site title from its home page, and its product category pages like "Software, Motherboards, Memory & Flash Memory" as well. But if you search
eBuyBatteries (one of our customers' site), Google just simply lists site title from its homepage, no category pages! How can we do that? We also want google to list product category pages in the search result just like newegg.