Some People have funny ways of spelling and don't understand that proper grownups don't want to put up with their attempts at ‘humour'. There's nothing you can do about them on The Internet, you'll just have to learn to circumnavigate them.
Not all of these are evil.
It's the Admin's website, and they can do whatever the hell they like with it. You're a guest, and hassling them about how they run things is akin to going round your Auntie's house and curling one out in her tea-pot. lol.
By and large, just remember to be excellent to each other. Be all civil and pleasant. Keep your tongue firmly in your cheek and get a nice thick skin.
Every time you post, your post count goes up by one. Some people seem to think that the higher the post count, the more worthy and valuable they are to society at large. Frankly, the exact opposite seems to be the case; posting just to up your count is insanely annoying, so make sure all your messages add to a discussion in some way. If you're replying in a thread, make sure what you're writing is funny, interesting or funny and interesting. “yeh i agree lol” is not, in any way, shape or form, a valid reply, ever.
‘Shouting' through the written word is pointless and annoying, clearly.
Don't post massive pictures that are wider than most peoples' screens. What's more, don't post massive pictures of filthy grotty porn or anything in case people are at work. Not even the most ardent heterosexual likes looking at boobies when sat near their boss. It's enough to put them off for life.
What's more, make sure you mark any risque links as Not Safe For Work, just in case, and make sure doing so is in keeping with the forum's tone.
By and large, just remember to be excellent to each other. Be all civil and pleasant. Keep your tongue firmly in your cheek and get a nice thick skin.
It turns out there's even more annoying stuff people do that we simply couldn't squeeze into the film...
Your profile pic is how people picture you, so choose something good-looking, funny or interesting. Pretty much anything goes, just make sure it isn't ugly or annoying and fits with the tone of the forum.