At 17/18, I really got into forums because I started to play Final fantasy games and wanted to chat with other people who were into the series. Although I don't play them much anymore, I still stayed part of one FF-forum. I also joined a random forum a few years ago. I became kinda stuck between them two. The FF forum is great, except for the fact that most of the members are between 13-17 years old, and a lot of the older members (older being over 20) left. The other forum has members that are around my age, with just about no under-18 members, but they get vicious because there are no rules. I was just banned from there for virtually no reason. A lot of the crap that went on there was just too much. It'd carry over to IMs and chats as well. It wasn't all bad, but that what
was bad was enough to want to leave, but I never actually did, because I couldn't find a forum where members could have intelligent discussions, little flaming, where there were rules, and whose average age wasn't 10 years younger than I am.

While this place is much larger than what I'm used to, everything else seems to fit the bill.