There are 2 reasons for my on why I sell my bounty earnings before immediately after it is listed in an exchange, first is the urgent of needing money. There are times that I am in need of urgent cash and that coin is what I have in extra and what I can sell so I just dump it on an exchange. Second is if I feel that the project would be bad and price will slowly goes to zero so I just sell my coins at whatever is the current price and just get the full out of it while it still has value.