I have been listening to Podcasts for a few years now and some of my favorite podcasts have called it quits. As someone who is starting out in Podcasting I would like to know from some of you who have "Podfadded" and come back why you quit and how long you did your Podcasting before quitting?

I ask this for a number of reasons. I am about to launch my Podcast and would like to have realist expectations of listenership/ success.