http://www.theregister.co.uk/2010/02..._no_listeners/
According to the above article, the BBC may be ready to start axing Digital radio stations that don't get a lot of listeners.
The article says that they are considering axing both the Asian Network (which costs £25m a year to entertain under 400,000 listeners) and 6music, which has actually shown some improvement this year at 695,000 listeners.
Rather more ominiously for the rest of the industry, the latest RAJAR report highlights the fact that despite increasing sales of DAB radios, the number of listeners to digital radio has stayed static.
Now, this could mean that some people have stopped listening to the radio on their TV Set Top Box or on the web and started listening to DAB,
It could also mean that people (as happened in my experience) found that DAB is OK, but is too sensitive to interference and doesn't handle it well when it happens.