anybody who 'likes'/does/wears/listens to/supports something to either fit in or to stand out.
these people have no self respect and often no self confidence which leads to them constantly working their image and not being themselves.
anybody who labels themselves as part of a social sub-culture (eg. punk, goth, hippy etc) could be seen as being a poseur.
most people are, in fact, poseurs. especially those who spend their entire lives trying to be 'crazy' 'unique' or 'random'
their insecure natures often lead to frequent style changes.
poseur 1: omg! red herring is selling Emily the Strange! Let's buy a shirt and be cool!!!
poseur 2: omg! red herring is selling Emily the Strange! That's not fair! i love Emily the Strange, but I can never wear my Emily the Strange shirt again because people will think i'm a poseur!
Genuine Person 1: hey look, red herring is selling Emily the Strange. I
really like Emily the Strange and i'm glad that there is yet another place i can buy Emily the Strange products now.
Genuine Person 2: hey look, red herring is selling Emily the Strange. That's cool, but i still don't like Emily the Strange.