I don't know the answer. But there has been an interesting piece - and comments - on the US National Arts Journalism Program's website, discussing the issue.
Try this:
Hearing a record once, especially at a "listening session," or even three-four times over a few hours at home, and writing even 300 words about it is totally foreign to the way people use recorded music--at least people who aren't just trolling MP3 sites the way people used to listen to the radio....
HERE'S THE WHOLE ARTICLE