Discussion on NI4D takes place in two venues:

• The NI4D google group / mailing list.  This is a mailing list which is handled by Google.  It has several hundred subscribers, the volume of messages is on average about 5 per day.  This forum is recommended information that you want to "push" to people.  This forum is considered the main NI4D forum.  We recommend that everyone sign up for this forum.
• The NI4D topical web-based forum.  This is an experiemtal web based forum running on this website.  It is a multi topic and multi "room" forum.  This forum allows people to create specific sub-forums for specific interests, for example, for supporters to exchange ideas on a specific subject, or in a specific geographical area.

You may use either forum depending on your needs.