With the benefit of hindsight, it all seems quite obvious. MP3 players, like Apple's iPod, in many pockets, audio production software cheap or free, and weblogging an established part of the internet; all the ingredients are there for a new boom in amateur radio.
But what to call it? Audioblogging? Podcasting? GuerillaMedia?
In the audible revolution article, Ben Hammersley writes about Grant Henninger's five-minute radio show: TestRadio: Second Chances