Can Full-Text Search Replace Metadata?
Hellman's talk was among the most arrogant and flippant I had ever attended at an ALA conference. His talk was supposed to be about linked data, but he exploited his position as speaker to unwarrantedly trash libraries, library standards, and librarians.
By way of GMANE, you can read what the folks at AUTOCAT had to say in discussing the matter further. Links to the slides used are also discussed in that AUTOCAT thread.