Usability's a term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal. Usability can also refer to the methods of measuring usability and the study of the principles behind an object's perceived efficiency or elegance. In human-computer interaction and computer science, usability usually refers to the elegance and clarity with which the interaction with a computer program or a web site's designed. The term's a… (More on Usability)