Try these interesting commands:

/s /play: gives the exact amount of time you played the logged character.

/toggelfog: removes all fog effects, excellent for an improved line of sight.

/ignore player_name: hide that spammer from channel!

/stuck: gets you to the start position of the map for free.

/sit: funny bored messages.

/who *:check who is logged in the game.

And the rest: