A user's power level is a number representing his or her abilities on the board. The numbers are as follows:
0: Normal user – Can create and reply to threads.
2: Full Moderator – Can manage threads and posts in all forums.
3: Administrator – Can edit user settings (including changing powerlevel) and view all private messages.
Sometimes power levels above 3 are used to indicate special status and give a user a special name color, but they function no differently from 3.