Here's an explanation for the wiki chat. To send a user a private message, simply put the cursor over the desired user's name, click it, and a menu will pop up with Private Message listed in the said menu. Italics and /me do not work for Role Playing on the Chat, so you should probably use asterisks. When there is a star next to a user's name, it signifies that they are chatroom moderators, admins, or bureaucrats. The chat may not work for all users, likely because of a bug.
1. Follow the Wiki Protocol
2. No arguing. Nobody likes it when they can't have a good time because people are arguing with one another. People arguing will be blocked from chat until they cool off.