Like a good gumshoe, listen to your conversation
partner's every word for clues to his or her preferred
topic. The evidence is bound to slip out. Then spring
on that subject like a sleuth on to a slip of the tongue.
Like Sherlock Holmes, you have the clue to the subject
that's hot for the other person.
Now that you've ignited stimulating conversation, let's explore a technique to keep it hot.