The Library of Congress is revising their "Cookery" subject heading [pdf], saying:
The use of the term “cookery” will be discontinued in these categories of headings. The term “cooking” will be used instead in most cases.
The "Cookery" example was always the go-to citation for demonstrating how traditional library institutions were out of date, and how Web 2.0 tagging filled a need by linking together books and information based on the way people actually think and speak.
LibraryThing.com has led the way in much of this innovation and development, showing the old timers better ways to serve library patrons. This Cookery change shows that the powers that be are paying attention. So does Ebsco's release of NoveList Select, which mimics LibraryThing for Libraries' functionality by putting NoveList data right into the library catalog (where our patrons already are), instead of making them go somewhere else for it.
People often refer to these traditional library vendors and institutions as dinosaurs, but they seem to be learning from and closing the gap with the inflatable rhino.