overall its looking pretty good to me kao. my only suggestion would be regarding section XI, specifically adding a "Quor Corollary" wherein users named Quor can, twice per year, and only to make very salient points, briefly break the profanity filter. for great justice. or....something.
(1)Section III and Section X tend to conflict with each other. Saying that one can use the karma system to deal with “stupid, inane or controversial posts”, and then say you can’t use the karma system on users whose every post is “stupid, inane or controversial”. Certainly “excessive use” comes to play. But what is the difference between rating every post by a user that posts once a week versus rating every post by a user that posts 3 times a minute? In both cases a user is being “camped”. So does “excessive use” come into play only with the 3 times a minute poster because of higher visibility/post count?
the admins consider the context of this thing. for example, in the WoW forums it was traditional to post a "weekend goals" thread. the same guy almost ALWAYS posted it, and would ALWAYS get rated up. by everyone. pretty much everyone rated everyone else up in those threads, at least on the "plans" post (rarely on subsequent posts, often which consisted of congratulations on accomplishments or the like).
but they're feel good threads, designed to build community, and in that respect it doesnt matter really if someone is coming in and rating everyone up or down....the system auto-corrects itself. so many rate ups occur and its a good thread that even if a dozen socks were made to come in and specifically rate everyone down they still wouldnt be able to sub-default people.
likewise, if you have someone who says something fun, funny, insightful, or otherwise positive, but they say it every, say, thirty minutes, then chances are they deserve their rate ups. even if they manage to say it every three minutes they deserve them, as long as what they are doing isn't a rehash (i.e. no rating up posts that reference an earlier answer to a question in a previous post).
in effect, the nature of the system combined with the general customs of the community and decent human judgment serves as a strong bulwark against a lot of the problems. so some newbie comes in, and spams a dozen different forums with an honest (and likely grammatically incorrect) question. the community members see this, likely answer it if they can, and ideally say "by the way, please dont toss up a dozen different threads about the same topic. thats technically against policy, but youre new here so just be aware next time." if that doesnt work, or if the community doesnt step up and do that for whatever reason, the admins will come in and fix it.
and if someone is coming in and spamming posts with a new account, well, its pretty easy to sub-default all them if its clear that what they speak is dross. and the admins arent going to come after you if you seek out every one of their spam posts and rate it down, because theyre human and they have common sense too and theyll understand that, ultimately, you and the rest of the folks rating the spammer down are saving them a bit of work and keeping the site cleaner in the process.