With Glenn Beck, it's "follow the money"
Try joining his Insider Club. $44.95 will get you a six month subscription.
He began as a small time radio hack who became popular by screening his call ins searching to the far out nut jobs, so he could joust with them and eventually use his popular, scream into the mike "GET OFF MY PHONE"!
He's still a hack, convincing people he is THE voice of reason.