This would serve to cases RPG forums. Here's an example:
A forum with a roll of Anime, where there is a post that only post those that have a character. Then he put password to post and gives to members who are entering the roll.
The talks are good, but my suggestion would serve to make...
Hi, I have a suggestion: You can set passwords in the post. It would not be for everyone, would in some cases.
It is a good option in other types of forums is included.