[gruseom]

The point is that the word "hipster" has been in continuous use to describe alternative youth culture since the Beats.

http://books.google.com/ngrams/graph?content=hipster&yea...

[zerostar07]

As wikipedia explains, the term has been used to describe the culture of 2 distinct decades, not the decades in between

[gruseom]

Where does Wikipedia say that it wasn't used in the intervening decades? That's not true. Look at the ngram link I supplied – it clearly was in use. What do you think it meant?