This feature can display the questions between the logged in buyer and seller through the contact seller feature. Those questions/answers will display in the listing details template where the "public question/answer" code is placed.
Highlights of the Public Question/Answer feature:
You turn the feature on within the following setting of the admin tool:
LISTING SETUP > GENERAL SETTINGS > Public Question/Answers to show per listing
If the above setting is "0" the feature is off. If you want the feature on set the above setting to a positive number. That number will be the max number of questions/answers that will display in the listing details page for a specific listing.
If you have this feature on and a LOGGED IN USER clicks on the contact seller feature in any listing within the system this is what appears:
The buyer must choose "yes" to agree to make their question public. Once that form is sent the seller that receives the question must go into their "my messages" admin tool to answer the question and agree also that the question and their response be made public by checking the appropriate box as shown in the following screenshot:
Within that screenshot you'll see:
Once the above is done by the buyer asking the question and the seller answering the question their responses display within the appropriate section of the auction or classified ad details like so: