I don't mean the general topic, it's easy to create a forum and say, 'Okay, this is about Web Design' etc. What I mean is that certain things are or are not accepted on different communities, and they have a different style to them.
For example, take a look at http://community.sigames.com/1/OpenT...6&f=8191933985. A great deal of the threads are nonsensical, although they still recieve a great deal of replies, and users take abuse on the chin (It seems all part of the 'fun'.)
Basically, what I'm asking is how did this community become this way, and what made for example, sitepointforums.com take a different route. How can you encourage a community to move in one direction or another?