No it does not reset. Only admins can reset your rank. My rank is around 40, but I worked many days hardly for it, defeated high-rank people n stuff, and no, your rank wont stay as what it is, if you keep losing, your rank gets worse, if you keep winning a lot, your rank gets better. toribash uses '' elo '' rating system, wich is like nuthug explained, losing to low elo people, you lose more elo rating, winning high-elo people makes you get more elo. better elo, better rank. (By the way, win ratio gets smaller when you get more qi, like if you had 70% win ratio when you were black belt, your elo rating is 7% when you are 10th dan black belt.)

Cheers.