The New York Times takes a look at the Art Loss Register.
UPDATE: Tom Flynn comes out of retirement to offer some (pointed) comments. Dorothy King describes her own experience with ALR here (and be sure to scroll down for the comment in response from Larry Rothfield).
UPDATE 2; Noah Charney: "The article was interesting and made clear why so many people within the
world of art investigation, policing, and security find the ALR to be
problematic."