Enterprise search is not web search. It involves searching across disparate database. This article has some data on how bad search is - "some employees spend up to two hours per day searching for information in intranets and enterprise search tools"
The findings and discussion come from a report from The Digital Workplace by Stephan Schillerwein available from Infocentric Research.
"According to Schillerwein, one of the main reasons for the problems of enterprise search is the lack of context. In days of old, information in the enterprise was found by secretaries — real persons, not computerized assistants — who knew who you were, what your job was and what you were currently working. A search engine has none of this context. "
Schillerwein takes a very personal approach - what the employees does, needs, and prefers. There is no mention of an enterprise taxonomy

