A3Wasteland is a multiplayer game mode with a money system, where you can drop and pick up money.
Currently there is an exploit with the money system that players can dupe money by repeatedly picking up a pile of money. This is accomplished by using bandwidth limiter.
First they will drop a pile of money on the ground. Then they will turn on the bandwidth limiter, which will lower the bandwidth to an unplayable level, e.g. 0.5 KB/s. But they will not be kicked.
After that, they will begin picking the pile of money up. Due to the effects of the bandwidth limiter, they can continuously pick up the money (it will stay on the ground after being picked up).