Callers are part of the mix for talk radio. If you exclude them, then it's not talk radio as we know it. That said, it's far too easy to just open the phones and let the calleers dominate. It's all about the right balance. I remember one host left the booth, went into the control room and let a lister host the show for about 10 minutes..funny stuff. You can't do that kind of radio if you drive away the callers