tb-planning is a moderated list:
* Anyone can subscribe and anyone read the messages.* Anyone who subscribes can post. By default, posts will be reviewed by a moderator before being sent to the list.
* A smaller number of contributors will be added to a whitelist, and their postings will go directly to the list without having to first be reviewed by a moderator. These will be people who are believed by the moderators to have high-value contributions to offer and who are not generally prone to ranting, venting, and being unnecessarily argumentative.