Verity

Verity is the quiet little gremlin that wipes up after the server and doesn't tell it anything about what it's doing. It'll tell you what commands you can use, it'll show you your rank without giving too much away, and it'll make sure the SMP isn't a drunken spaghetti-slaying mess. No drama, no chaos, just a safe atmosphere to survive in, and the plugin quietly critiquing your life choices.