How Can I Get More Questions for My Podcast?

Today's question comes from Paul, who has a weekly podcast that relies on listener-submitted questions. How can he ensure that he gets enough submissions on an ongoing basis? Is there a baseline amount of traffic his website needs? Paul's website is http://godzoneshow.com/. Paul and I both use Speakpipe to collect recorded questions from our audience (http://askpat.com/speakpipe). Do you have a question about podcasting? Record it at http://www.askpat.com/. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.