That's the extent of the explanation posted on the Arts Blog yesterday by Register music critic Tim Mangan, a shining light of the Arts Blog. In the comments, he says that it was not his decision.
What a mistake this is! It's 2010, and new and social media are where it's at, ways to reach audiences within and outside the regular sphere of a newspaper's influence. The Arts Blog has a loyal readership, including yours truly.
If you read the Arts Blog and you have thoughts about this, send them to Rebecca Allen, email@example.com.