The definition is of an individual, usually a white college age male yuppie type, w/ no original ideas of anything in their head. They need social media to tell them what to wear (you will see they pretty much all have uniforms and haircuts that resemble their brethren), what to say, how to say it, and what to believe. Their usual habitat is a StarSucks coffeehouse where they are all attached to their phones, furiously sending vital messages to each other (often others that are seated at the same table) by Facebook and Instagram. The best thing you can do if you encounter one is call a hippie to have a hipster/hippie conversation w/ them in the hope they will bring them over to the hippie side (see definition of Luddite) so they can all have hippie clothes, ideas, and slogans, and listen to the same music. Peace. Love is the way.