I've been podcasting for over 6 years now and wanted to share a tip that's great for newly started and established podcasts alike. It is one of the most valuable tools I use as part of my workflow.
If you are doing a podcast you want to have a decent and consistent volume level throughout the recording. Manually adjusting the volume is hard enough to do if you are the only one talking and gets increasingly difficult for a multi person conversation. Levelator does all that work for you. Head to their site and give it a try. It's free and available for all major operating systems.

I also did a post about it on my website: Levelator, a smart audio tool everyone should know about