What is hipster?

There is a company that sells printed magnetic sheets the size of your whole refrigerator*. This one depicts 35mm cameras, Converse basketball shoes, round glasses, something that looks like a cassette tape, and something else I can't parse. This particular magnet is called "hipsters set."

http://www.kudumagnets.com/hipsters-set

I thought I had an idea of what hipster is. But this makes me think that hipster is nostalgia for the 70s, and that's not what I thought it was.

*If you ask me, that takes all the fun out of refrigerator magnets.

Class signaling via Apple products

"A Macbook Pro is just as much of a status marker as a Louis Vuitton purse or a BMW."

I recoil at the notion because I think Vuitton purses and BMWs signal a different class than ones I identify with. (At least I tend to have prejudices about people who have those things—I'll assume "not like me" unless I get evidence to the contrary.) But I do think that, in California at least, there's a class I might call "hi-tech professionals" and having Mac products can signal identification with it.

FWIW, I think I'm kind of clueless about class.

Anyway, it's interesting to contemplate. What do you think?