How to trigger valuable discussions in collaborative innovation?

Innovation platforms with discussion functionality allow users to collaborate and develop ideas with great potential. Good comments are those that provide details, remarks, links, different perspectives, weaknesses and risks, and questions to drive discussions. Less useful comments, such as only expressing positive feelings or negative criticism, are not productive. Valuable discussion involving different personalities, such as creative types, inquisitive types, helpers, and doers, increases the chance for an idea to mature and be processed faster. Triggering valuable discussions can be achieved through communication, seeding comments, active moderation, involving sponsors and reviewers, and rewards and recognition.