1 A metaphor is a possible way to achieve a mapping between the computer system and some reference system known to the users in the real world. A metaphor can provide a unifying design framework and facilitate learning by allowing users to draw upon the knowledge they already have about the reference system (Hudson, 2000).
2 BizRate.com Web Site. Accessible at http://www.bizrate.com
3 eCommerce Trust Study. (n.d.). Cheskin Research/Studio Archetype Sapient. Retrieved from: http://www.sapiend.com/cheskin
4 Dack.com, Best Practices for Designing Shopping Cart and Checkout Interfaces. Available at: http://www.dack.com/web/