+If you are a member of a community forum, you may post to the forum by including an @-tag in the post mentioning the forum.
+For example @bicycle would send my post to all members of the group "bicycle" in addition to the normal recipients.
+If you mention a forum (you are a member of) in a new posting, the posting will be distributed to all members of the forum, regardless of your privacy settings for the posting.
+Also, if the forum is a public forum, your posting will be public for the all internet users.
+If your post is private you must also explicitly include the group in the post permissions (to allow the forum "contact" to see the post) **and** mention it in a tag (which redistributes the post to the forum members).
+Posting privately to a public forum, will result in your posting being displayed on the forum wall, but not on yours.