Mylot Quizzes?

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Hi, after doing my daily browsing and commenting I found this new tab, and I don't know if it was here before, but it is a quizzes tab. Sorry if it is already announced but haven't noticed it at all. It looks pretty cool, as I see there are a lot of quizzes to take. Now my question today is are these quizzes just for fun, or do we get paid for it, like photos, comments and task?