I don't know as I have not earned any yet. It has been just a few days since I have joined but I will make some observations.
1. Number of active users on Clarity is not clear(no pun intended).
2. Answers would seem the logical way to generate demand but are often asked by people who don't understand the need to invest in quality information and planning (might as well ask on Quora).
3. The should be a way to monetize messaging because some users tend to be more comfortable with the method of interaction.