It is basically an synonym for reality, even though it isn’t real.
It is also the Title of a song called by the same name by a DJ/music producer called Madeon (Or Hugo) released in 2012 in which he mixed 39 song into a 3 minute track.
A person or persons who deliberately partake in cultural assimilation via musical selection, cultural fads, fashion, or activities to garner a sense of high self-esteem and avoid rejection by one's peers even if it means sacrificing morality, taste, or common sense.
Society is comprised of a large number of pop culture groupies who listen to music and watch movies that are mediocre because it is poplar amongst their peers. Men are even starting to blur gender boundaries by wearing pink because they see celebrities do it on television.
A cool-hunter is actually another name for a professional pop-culture sponge.
A pop-culture sponge, soaks up the styles and trends wherever he/she go.
When you pay attention to and absorb your surroundings from a cultural point of view you are literally a pop-culture sponge...just make sure you digest and wring out the things you dont need and dont want to keep.