how exactly does Yuwie! works?

Tweet

I signed up at Yuwie! a few weeks ago. My earnigs, if I already ave any is not yet reflected in my account since earnings are updated is updated after 15 days after for the previous month. And I don't exactly understand how to earn from it. Although, I have a general idea that you get paid for participating. But how do I maximize my earnings? Can you give me some tips. I would really appreciate it.