Are medals distributed automatically through the fanpop system when we are very active in one club or is it given out by a member/moderator of that particular club?

It is computer generated. How it works is like this: Yes you have to be active in the particular club that you want to get a medal in, but not only that, people have to fan the stuff you post on as well. Fanning is important if people don't fan, then there is no way you'll get a medal. It's all about popularity - the more fans you get for your stuff, the better the chance you will get at receiving a medal. Also the type of medal is distinguished by how many fans are on your stuff. When you relieve it, well Fanpop just randomly gives it to you, not any one in particular. I hope this helps you. Also You can keep track of your best contributions on the 'Pop-out' tab on the left and side of your screen. It will tell you the clubs you are closest at getting a medal in~

I'm pretty sure that it is computer generated. If it was given out by a member, then it would be unfair. Remember, no one owns a club/fanspot (unless if it's their own user fanspot).