The discussion board is the SmartSimple forum, you can access Discussions from the Communications Menu and create Discussions by clicking the New Topic link.
Topic Name is the name of your Discussion
Suggested Tags are keywords that help users search for your topic.
Description is the description of your Discussion
There is also the ability to add Custom Fields to the Posts/Replies by clicking the Custom Fields link.
A Workflow can also be triggered from the Discussion by creating a Workflow and selecting it in the Workflow dropdown on the Discussions settings page.
In your Discussion you can create topics by clicking the New Topic link.
Posts and Replies
Inside your topic you can post replies by clicking the Post Reply link. Each reply will have a subject and body text field and users can delete their posts after posting by clicking the Edit post link and clicking the Delete button.