bạn add content to clubs: images, videos, các bài viết etc. You're also active in general there, answering các câu hỏi and commenting on things. The thêm people who người hâm mộ your stuff, and the thêm các bình luận your stuff gets, the faster bạn ought to get a medal.
The system is a bit ngẫu nhiên though: some people get huy chương for a small amount of stuff, while others take longer. People sometimes get huy chương in các câu lạc bộ where they've been less active than the các câu lạc bộ where they've contributed more.
It takes a while, so bạn really have to be patient. It took me about a năm of being active here to get my first medal. It's better to just contribute for the sake of contributing, and just let the huy chương happen.
