Add ability to send private messages to admins
As a follower of a board, it would be nice to be able to give the board admin some feedback via the interface.
For example, the admin could enable feedback to let followers suggest new sub-boards, or let followers request to become posters. Without this, the only way for followers to contact admins is in person or by commenting. Meeting in person may not be possible. Comments are likely to get cluttered, without any guarantee that the admin sees them.