This soalan has been asked so many times, the answer to this is also listed in faq at the bottom of the page. To get a medal, anda pretty much have to ask kuiz questions, polls, post links, pictures, video in any club but it also boils down to the popularity of what ever anda post.
anda just have to keep adding good things to the club, such as images, videos, pautan and articles. The lebih people peminat those, the quicker you'll get a medal there. Getting a lot of komen-komen on your contributions may also help, as well as starting off forum discussions which get a lot of posts and soalan which get many answers. Answering soalan and tinjauan-tinjauan also helps. Just generally being active all over the club.
The system's a bit random, to be honest. atau it's become Rawak recently. People get medal in Kelab they've barely been active in, while they're favourite and most active Kelab remain medal-less.