Every new player who comes to our server will be by default a Guest. Guests have few commands they can use. That is mostly for safety reasons. Guests have to first show to be worthy promoting. That means they have to spend some time on the server and if they are good, they will be promoted. Normaly it takes few days to weeks, depending on how often they play.
Guests use the prefix: [Guest]
The top100 list of Guests.