Pay 50BTC to become a VIP, and then be able to change your username there.
Or, have a good reason for theymos to take time to change it manually. I doubt this will happen though - it rarely ever does. You might need to have contributed to the forum, but don't quote me on it.
So is that a money making business for the forum?
How do we make sure the VIP behave properly?We don't.
One of them 'allegedly' stole millions of dollars worth of bitcoin due to a 'hack' which resulted in many, many people losing money on a site he controlled.
I'm not going to type any more though, the info is around if you look hard enough.
In short - We just have to hope that uber early adopters & people trusted on here can be trusted. There are several examples where DT has failed though too.