Received this notice today:
Please note that due to the difficulty of the subject matter, we are extending this Study until May 26th. Your hard work is much appreciated!
It would be much better -- and much fairer to the researchers -- if it read as follows:
Please note that due to the difficulty of the subject matter, we are extending this Study until May 26th. Your hard work is much appreciated, which is why we are increasing the total reward offered to $10,000.