g1smd - 8:05 am on Jan 2, 2013 (gmt 0)

I wouldn't use the pseudo-folder structure.

That URL is category 20, page 5 with the category name.

For products, /p543234-product-name

reviews, paged, /r543234-p3-product-name

tech specs /ts543234-product-name

and so on.