Brad Hinton has written a series of posts about his Tagging and the Enterprise at a conference last week. Brad discusses search, the benefits of tagging and its perceived disadvantages, and provides some links to articles about enterprise social bookmarking and tagging.
Reminding me of the broad theme of David Weinberger’s Everything is Miscellaneous, Brad ponders:
"perhaps one could say we are in a period of transition from the structure and hierarchy of giving order to physical information (like books, journal articles and celluloid film) to one where digital information allows for innumerable access points, innumerable tags and descriptors, and seemingly available from anywhere."
BTW I haven't found Brad's presentation on SlideShare just yet, but in the meantime you'll find some other examples.