In Game Description
Syntax: follow <person or mob> This will cause you to follow a person around. As they leave a room, you will trail behind them, provided that nothing blocks your way. To stop following someone, type: follow <self>, or just: follow. Example: > follow Egwene > follow guard
As a note - if the person you are following has a warrant say from Illian then when they get hit by mobs of the warranted city, you may become warranted as well.