Podcasting is something typically done at a desk with fancy microphones and editing software, but as Fraser Speirs -- co-host of the Out of School podcast -- details on his blog, it's something that can also be done quiet smoothly using iOS exclusively. The process isn't necessarily as slick as it can be with a professional setup, and as Speirs admits, the options for shining up sketchy audio isn't aren't as robust as they are on a desktop, but it's definitely doable.
Speirs uses a Samson Meteor mic ($69.99US), Skype (Free), and the Auria LE app (