This challenge is called "mail me."
You must get users NOT IN THIS game to mail me YOUR username. Once you think 15 people have mailed me, you must send me a mail saying "STOP." You will all be ranked based on how close you are to 15. Challenge ends in 24 hours, mail me any questions.
Users can mail me the names of more than one person in this game. However, one person cannot mail me the same name twice (I.E. someone could mail me for Cray and then Glinda, but not for Glinda twice).