Podcasting is hard work! I have a podcast called Jesus in Books. I read a book about the historical Jesus Christ, then discuss it. It's pretty tame stuff compared to, say, Dan Carlin's epic Hardcore History, and a lot shorter too. My episodes rarely go longer than 20 minutes, but the time to prepare, record and edit the episode is about 20 hours.

So yeah, podcasting can be time consuming, but I find it's a great way to commit what I've read to memory and formulate my own opinion on the subject matter.

Here's my podcast for anyone who is interested in checking it out: https://soundcloud.com/jesusinbooks