Or if a person writes like "u no, like dat? No sh*t!" You can infer that the person is a teenager who chats using some kind of instant messenger. (Refer to the Internet Language thread for other better examples.)
Well, i think you faulty are young, possibly early 20's despite your apparent disdain for teenagers. You are bright there's no denying that, but you try too hard in your intelligence, you have an urge to impress people. I would guess this urge dominates most of your relationships, you really hate it when people dislike you. You also have a keen perception of the world around you, or at least you like to think you do. You are very attentive to details and i would guess you are a good listener but not very talkative especially in large crowds. You are obviously interested in appearance as you brought up hair and clothing in a post simply about writing style. You are probably very conscious of what you wear and deliberately wear quite plain, boring clothes that wouldn't make you stand out too much. You are american, not that that's important. Finally i would guess you are a perfectionist, always pushing yourself and are probably a fast learner and a good pianist because of this. Oh and you read over your post a couple of times before posting it, lol. Well, do tell me if i'm right. I could be way off i really don't know. As i said its just a bit of fun, i bet you can see at least some of you in that though.