There is very little traffic here so there seems to be little reason to ban or excessively moderate.
People aren't banned or moderated based on traffic counts. Regardless of traffic, I would see little reason to excessively ban or moderate under any circumstances.
This is the only site that I'm aware of that has a list of the banned members publicly listed upfront on the main banner.
It's something I'd prefer wasn't there, but it's not something I have control over.
It's also interesting in that it has such an intensive system for moderation. A points accumulation system for varying banning periods.
I would think that you could simply just warn people who are getting out of hand and if they really get out of hand then you could just ban them outright.
Why such a time consuming and complex system?
I doubt our moderation system is any more intensive than the system used on any other similar forum. We have a "report" function. Moderators look at reports and deal with them, using the guidelines we have chosen to implement. Moderators on any similar forum that has moderation worth its salt will also need to look at reported posts and deal with the same kinds of issues we deal with.
The points system we have means that moderators here practically never have to lift a finger to issue a ban, other than for obvious spammers and severe trolls. Bans are automatic, based on accumulated warnings.
Our warnings and bans have not always worked the way they currently do. Over the period of this site's existence, we have at various times had different systems in place. If I recall correctly, the general membership has always been consulted whenever we have made significant changes to our procedures (which hasn't happened for a few years now). Another thing to say is that the software that runs sciforums only allows for certain types of warning and ban procedures, so if we want a system that is not impractical or annoying to administer, then we need to roll with the limitations of the particular software we're using.
Is this actually the way most sites are moderated and I'm just not aware of it?
Depends what you mean by "this". Different sites have different policies and procedures, as they choose. The challenge of running a discussion forum that is protected from malicious or low-quality posters is similar regardless of the particular focus of the forum.
Of course, there are forums out there that have less moderation than this one, and there are ones that have more. The "strictness" of moderation varies according to site ethos, what the admin and membership want, etc.
Banning hasn't been a big part of most forums I've been a member of. Generally it is just a matter of permanently banning the nightly spam bots or maybe rarely permanently banning some jerk that just joined in order to be banned. Otherwise, moderators aren't really even visible at most sites I've joined.
Banning isn't a big part of this place, either. Most of our members have few, if any, warnings, and have never been banned for any period of time. A small minority of our members choose to walk a line by which they accumulate warnings until they get a temporary ban, then they settle back until some warning points expire, rinse and repeat. The system we have in place allows them to do that, and it seems they are happy to put up with the temporary bans they attract. If they weren't, they would alter their behaviour accordingly. There is evidence that these (few) members
can control themselves when they want to, as shown by their careful avoidance of accumulating too many active warning points (such as would get them automatically permanently banned, for instance).
As to the visibility of moderators, you tend to get two kinds of moderators of discussion forums. One kind are people who are employed (usually) solely to moderate. That is, they do not participate in discussions, but are only there to curate the content. The other kind are often volunteers, owners or people who are considered valuable contributors to the site: the kind of people who have high visibility as a result of their contributions to discussions, quite apart from whatever visibility they have in their roles as moderators. sciforums has none of the first category of moderators; all our moderators are of the second kind.
Another point is that our posts-by-moderators to posts-by-regular-members ratio is probably higher than a lot of other forums, especially ones that have a lot of people blowing through to ask just one or a couple of questions and who are then never seen again on the forum.
How did this culture comes about?
Partly by consensus among the members, and partly due to carefully considered choices made the moderation team.
Here the problem is getting more members and the focus is on banning members?
There's no focus on banning members here. Not among the moderators, anyway. That might be your focus (?)