RAOK = BOMB
Like saying...."Here Buddy, have some cigars....enjoy".
or
"I value your contribution to the boards....enjoy"
etc.
Established traders get and give RAOKs. I have recieved numerous and have given numerous...even whole boxes of cigars.
To participate in the RAOK system, you must have a very generous nature or belief in a karmic system.
I'd recommend it.