ClotheS
The point here is to wear what you like. Not because it's new and stylish or costs the most or least. The point of not being poser is just being yourself. It's not a matter of whos wearing what or doing what it's what you like. Whether it may be "preppy" clothes or "ghetto" clothes whatever you want to call them the reason you wear it is because you like them and feel the way you want to feel in them it's not so you need to impress the other person.

MusiC
Music is very disputable. Rock, Rap, Punk, Pop-Punk, Emo, Metal, Hip-Hop, Pop, Techno, Country, Soul, Ska, Alternative and whatever else is out there... with so many differant names for the music you listen to what "clique" do you get put under. In order to not be a poser you should listen to what makes you feel good. I mean for some people rap is the shit because it has a good beat or maybe metal becuse it lets out your anger. Whatever your reaseon may be it hsoudl be the music you like listening to and NOT because it has somethign to do with the label you want. Like some people dress "punk" but like rap. So they change themselves to like punk music also. That right there is a big no no in the non-poserish world. Express yourself through your music... it should be you not the thing you want to be.

ActinG
This seriously pisses me off badly. This is a BIG rule also. No matter WHAT do not i repaeat DO NOT act a certain way just to be labeled something you want to be labeled. The way you act is the only thing that people notice first about you... if you act tough it should be that way because you are tough NOT because you want to be under the clique that goes alone with being tough. For instance, if you want to be Emo for some strange reason don't purposely act depressed and write.like.this.online just so people call you emo. It's the most poserish thing in the world to not act the way you are. If you're going to be labeled something at least get labeled because it's the way you really are not because of the way you made yoruself. Then it's not really your label is it?

ClotheS
Basically is you really really want to dress a certain way look at the links on the bottom. There are some tutorial pages I've found on how to eat, sleep and breathe to follow the label you want. But besides that part of dressing as a poser you're just going to find a way to look like what you want only because it goes along with the clique you want. It's not your own style or what you like... you just wear it because it's "the" style not your style.

MusiC
There is no real way to be a poser with music. There are so many beats, rythms, lyrics and types of music that you can just listen to whatever you want and get away with being the label you want to be. Usually people classify you as:
Ghetto = Rap, R&B, Soul, Hip-Hop ect...
Preppy = Pop, Country, Techno, Pop-Punk ect...
Punk = Metal, Ska, Pop-Punk, Punk, Rock, Alternative ect...
Emo = Punk, Rock, Ska, Emo, Pop-Punk ect...
See a pattern?

ActinG
You should just act a certain way because the people that are labeled as the clique you want to be in act that way. Such as usually being tough corresponds with ghetto, acting bratty and rich is preppy, acting odd or on the outside of things is punk or acting depressed and sad is emo. The stupid thing is... why act a certain way to get called something? So certain people like you or something? Well f.y.i more people will probabley end up hating you for acting fake and stupid rather than liking you because you're trying to act like them.

Links
Emo