[krackers]

>That sounds like an interesting article, would you send me a copy later on

This one makes sense to me since it roughly gauges the non-verbal aspects of interpersonal communication. If the interviewee does send a copy, it's a signal that he's dependable in some sense but perhaps more importantly if he goes a bit beyond and sends a few other articles on the topic, it shows passion for the topic and a desire to communicate that knowledge to others.