That post is the exact reason i dislike working with children on a professional basis. They just brag, all the time and don't stop. I don't care what you can do, nor does anyone else.
Also the fact that you gave no valid reason not to judge anyone else who is 12, just yourself because you're trying to make yourself feel older by talking about knowing how to code HTML (what anyone can learn in 15 minutes, dude it's not that hard, there's like 30 tags). Just because that may be true for you, every other 12 year old who isn't 'gifted' is still an annoying kid who wants staff on my server. Maybe you feel as if YOU personally should be treated older, therefore you should lie about your age if you feel you are appropriately adequate to take on the roll acting and being older.
I will never have lasting impressions on anyone who tells me they're 12. If they act like they're 20, they're 20 in my eyes.