When someone comes up to you and thanks you for your presentation try responding with, “Thank you very much. What did you like especially?” You’ll get an on-the-spot example of what hit home for them. And if it is critical or negative, lean in a bit with “Wow, tell me more about that” and say it with genuine interest. No matter who or where, people, especially those who told you the great and the not so great, they all like to be heard and acknowledged.