Do users know what we are talking about?

Just some food for thought:

John Kupersmith recently posted his great study on what users understand of library lingo. The full report is at, http://www.jkup.net/terms.html

The study, finds the terms most often cited as being misunderstood or not understood by users:
Acronyms & brand names
Database
Library Catalog
E-journals
Index
Interlibrary Loan
Periodical or Serial
Reference
Resource
Subject categories
such as Humanities
or Social Science