Viper nailed it.

While we have a set of rules that we abide by, generally you get banned for making the kind of posts that result in people saying "that guy deserves to get banned" And it's usually pretty easy to figure out what those are.

Taking some posters too seriously.

There are some evil posters who enjoy tormenting other posters. You'll see who they are pretty fast... probably the hard way.

Try to avoid this: http://vgchartz.com/forum/post.php?id=1383543

Just be sane, and you'll be okay.

Leaving posts blank, turning a comment you disagree into a war, not respecting diff. ppl's perspectives/viewpoints.

Spamming, insult to one's race, religon, culture, innapropiate profile image, trolling, etc.

Just put thoughts into your post and respect others: you'll be okay.

Speaking to or about Makingmusic476 is a surefire way of getting banned.

I should know! He banned me, for speaking to him.

saying something bad about the wii.

even if you can prove it with facts (scores).

Post something bad about Nintendo and you're gone.

If you're a Nintendo fan and you're getting banned, then you must be stupid and probably deserved it.

that guy deserves to get banned

I got a 3-day for commenting on someone's sig predictions being wildly off (it wasn't the topic of the thread, granted).  I didn't think I'd get banned for that.

not always so (though I don't recomend taking the chance)  I had a member of this community curse me and damn me, and all in the name of God.  I reported it and the mods to my knowege did nothing. 

I think it largely depends on their mood.  Do something stupid online the night that some mod gets dumped by his bimbo girlfriend, and then watch out (bans for everybody!)