Planet13 - 6:06 pm on Dec 13, 2010 (gmt 0)
The index page contains... links only to these specific departments.
That would be somewhat in disagreement with what Matt Cutts has stated in an official video (or two) about the importance of ecommerce sites to put some of their best selling / revenue generating products "front and center" on the home page.
Also, another point someone brought up was about the navigation being intuitive.
Unfortunately, people don't think the same way. Some people might think that shopping for shoes by brand would be intuitive. So people might think that shopping for shoes by function (dress shoes, running shoes, dancing shoes) would be intuitive.
Other people might think that shopping for shoes by price might be intuitive, while others might think that shopping for shoes by which celebrities are wearing them might be intuitive.