Give them first comment award! After all, it's the most important thing. It doesn't matter to even look at the deviation or journal or poll, or even to comment on something about it! First comment is the most important.
I am currently in the process of giving an award to the person that has been first to comment on something! All they have to do is to write "first comment!". The first person to reach a 100 will win.
this is indeed needed for the growth of our association.