If you’re thinking about doing some podcasting, you might like to learn about audio quality and the process of recording. I had never given it a lot of thought until hearing the recent BoagWorld podcast 189 (scroll down near the end to find the notes on podcasting). After recording almost 200 podcasts, their equipment is fairly advanced, so you might prefer to look at this Podcasting Equipment Guide with its ideas on entry level up to professional recording equipment.