Applications are the navigation tools available to help users find information.
Roget's Thesaurus , on the other hand, does only the first two tasks. It tells you that a word exists and directs you to related terms, but it doesn't link the terms to a source. In addition to performing the basic three functions, a taxonomy should also inspire trust . Unless a local business is very new, very small, or very specialized, you can be pretty sure you'll find it in the local yellow pages. And there's the rub.