OMG, you're amazing Kanan, you shouldn't have to...
All warnings, kicks, and bans are posted on the board. Courtesy copies of these messages may be sent in PMs as well, but the principle is that everyone gets to see exactly what the administration is doing. The idea is that it's not enough for justice to be done, justice must be seen to be done. This also allows members to criticize mod decisions, because everybody knows exactly what is going on and the people participating in a thread will almost automatically see any disciplinary action that happened in that thread.