You may already knew that some of the users in Mig33 have the unique character nick or nickname. Such as they can have only 3 three digit character nick or 4 character nick or icon or space nickname. How to make 3 nick of Mig33 id?
As long as we understand they can make those nickname when Mig33, in one or two years ago got the maintenance and has an MIG33 v Beta update (only available in 3 or 4 days). Right now, you'll never be able to use such nickname username of Mig33 with 3 letter or character. You have to crack or buy the nickname to the owner.
Hope this would answer you question and wonder.
