Global Navigation

97% of sites included global links to the site's top-level categories. While global links to top-level categories help reinforce the breadth of a site's offering, they also consume significant screen real estate for links that arguably are not as relevant to users as page-specific content. This is particularly true at the lower levels of the hierarchy, where there is a larger amount of semantic distance between the global links and the page content.

Adkisson, Heidi P. Web Design Practices (2005). Articles>Web Design>Information Design>E Commerce

Use of Faceted Classification

Unlike a simple hierarchical scheme, faceted classification gives the users the ability to find items based on more than one dimension. For example, some users shopping for jewelry may be most interested in browsing by particular type of jewelry (earrings, necklaces), while others are more interested in browsing by a particular material (gold, silver). “Material” and “type” are examples of facets; earrings, necklaces, gold, silver are examples of facet values.

Adkisson, Heidi P. Web Design Practices (2005). Articles>Web Design>Information Design>Metadata