You can use IdeaJam to post your ideas how to extend OpenNTF: 1. new project ideas, 2. extensions to existing projects, 3. infrastructure improvements and 4. strategy of OpenNTF. You can request your own ideaspace for your own project by sending a mail to support@openntf.org (use 'ideajam' in subject) or use the generic ideaspace for extensions to existing projects. You can also vote ideas and add comments to other people's ideas.
Getting started
In order to add ideas, votes or comments you need to login with your OpenNTF credentials. If you haven't registered you can do so here.