By popular demand, here is the long awaited explanation of the Member of the Month system as it is currently operated.
Votes for Member of the Month are submitted to @MBTI Enthusiast via PM. She begins counting votes for a calendar month on the 20th of the previous month through the 20th of the current month. At that point, the new Member of the Month is selected (whoever has the most votes.) She then notifies that person, and if they accept, she sends them the interview questions. They are asked to send me the responses to the questions, a photo, and an image of a handwritten motto.
She posts the completed interview on the first day of the new month.
Edit, 24 April 2012: MOTMs get a custom post rank indicating when they were MOTM. Please specify what color you'd like this text to appear in when submitting your interview.
Edit, 11 April 2012: Vote counts are not secret. If a member wants to know how many votes have been counted and who they're for, just send @MBTI Enthusiast a PM.
Edit, 24 April 2012: Post ranks have been updated for former MOTMs.
Edit, 24 June 2013: In case of a tie, the member with the higher post count will win for that month.
Edit, 24 June 2013: Votes are not rolled-over from voting period to voting period.
Edit, 27 June 2013: Members are not allowed to vote for themselves. If they do, the vote will not count.