A good listener should practice dynamic listening. Here read this short excerpt of an article on the website of Management Study Guide:
Listening is a significant part of communication process. Communication cannot take place until and unless a message is heard and retained thoroughly and positively by the receivers/listeners. Listening is a dynamic process.
Interesting, eh? If you wish to read the entire article (it is brief), click on over to Effective Listening Skills – An essential for good communication.
I suggest you also go over to take a look at the following two web pages from Texas Tech University:
Teaching Aid #5: Listening and Feedback
XL 0201: Strategies for Learning, Self Assessment – How Well Do You Listen?