This add-on allows you setup forums based on Question & Answers with just a few clicks. Also, allow users to ask questions while other users are able to answer the question with multiple. Then, the question starter may then mark which answer fits best.
Questions & Answers Forum allows you to turn your forum into a knowledge base, support portal, or just a questionnaire based community. Also, you can choose which forums are QA based or add a custom widget that allows your users to see which threads are unanswered.
Widget for unanswered threads
Threads get marked answered with a label when complete
Display order to display either by best vote (default) or chronologically
Enable an Unanswered Threads Widget to keep a watch out for those who need answers
Several user criteria for use with user group promotions and other systems that support the user criteria system
Users will receive an alert if their post is marked as the best answer
Importer for [n] Best Answer / Q&A System add-on
Up/down voting now processed through AJAX and doesn't require a page reload
Allow thread prefixes to automatically be applied to new Q&A threads as well as a separate prefix for when threads are marked as answered
Supports third-party styles
A question mark or checkmark will be shown on the thread on the discussion list if it has been answered or is still waiting to be answered
Ability to set specific threads as Q&A threads, force threads to be made Q&A threads, and target several user statistics whenever user criteria are supported
Ability to hide posts if the votes fall below a specified threshold