I just learned about this yesterday from one of my colleagues who works with our India team. It does make sense though. If I can postpone something, I should definitely be able to prepone it as well. Here are some other possibilities:
Repone - to reschedule a meeting
Unpone - to cancel a meeting
Nonpone - to fail to schedule a meeting
Corn pone - a delicious piece of cornbread
Pre-pwn - The act of planting a trap in a video game for an oncoming enemy that will most certainly ensure their complete annihilation :)
