Adding a dropdown "search category" in discussion section, drop down values will be AEM related topics.
Admin and other members add articles/references in discussion section and there are many important articles and references to good articles/blogs. AEM community is not only about Question/Answers, It has references to many important articles/blogs.
If user wants to read articles about "osgi framework", user can select the option from category filter dropdown and it will filter out all the articles on the basis of that.
This way "Discussion" section can become one shot way to get all the related articles.