I don't find it stressful. It is infact one site that according to me is the least stressful one and a place where I like to chat and relax. And the pennies follow that. Who doesn't love to earn interacting with a set of people who are your virtual online friends?The model of money making here is stressful. you have to depend on others to earn which I don't fancy
You don't earn from your activities directly. But indirectly it is your efforts that pay. If you are active and interactive there with others, you will earn.