The FAQ System allows Administrators to create custom questions and answers and display them anywhere on their site. Uses the full IPB Editor Group Questions into FAQ Collections to show different questions on different pages Display Collections easily on any page, in any IPS component Answers are displayed in a popup window so users are not taken to another screen Note: This mod is the 4.0-compatible version. For the 3.x version, see http://community.invisionpower.com/files/file/5761-faq-system
A must have feature for my community is definitely the ability to share in a post a single question / answer.