A podcast is a radio style programme online.  Like radio, it’s free.  Unlike
radio, you can listen to podcasts whenever you want.  With the spread of new
gadgets like ipads and smartphones, the distinction between podcast and
radio will blur even more.

New technologies mean podcasts can be fairly cheap to produce, as well.  The
kit you needed to make a radio programme (not including that massive
transmitter mast!) was huge, fiddly and expensive.  Now it’s all portable
and easy to use.

That’s not to say podcasts sound technological, or that you have to be a
nerd to get them.  If you like radio, you’ll like podcasts.  If you like
Greenwich, you’ll love the Greenwich podcast.  That’s the theory.

Podcasting is a lot easier than radio.