Nope. Not familiar with it at all.
Here’s what I got from http://mises.org/daily/1132
"Historian Burnett Bolloten, in The Spanish Civil War (1991), quotes a prominent anarchist from the Barcelona region (Catalonia), Diego Abad de Santillan:
“We do not wish to deny that the nineteenth of July [1936] brought with it an overflowing of passions and abuses, a natural phenomenon of the transfer of power from the hands of the privileged to the hands of the people. It is possible that our victory resulted in the death by violence of four or five thousand inhabitants of Catalonia who were listed as rightists and were linked to political or ecclesiastical reaction. But this shedding of blood is the inevitable consequence of a revolution, which, in spite of all barriers, sweeps on like a flood and devastates everything in its path, until it gradually loses its momentum.” [pages 52–53]"
MORE:
"Anarcho-Syndicalism, as seen in action during the Spanish Civil War, is yet another dangerous leftist utopian fantasy. There, the syndicalists tried to abolish money, but ended up using “coupons” (money) instead. They promised to abolish the state, but instead created a bunch of mini-states—“committees.” They promised that a new individual freedom would blossom, but what emerged was a frightening new totalitarian control by the committee, over every aspect of life. As noted by testimonials reported by Burnett Bolloten:
“The committee is the paterfamilias. It owns everything; it directs everything. Every special desire has to be submitted to it for consideration; it alone has the final say.”
“If someone has a girl outside the village, can he get money to pay her a visit? The peasants assure me that he can.”
“I tried in vain to get a drink, either of coffee or wine or lemonade. The village bar had been closed as nefarious commerce.”
“With the abolition of money, the collective held the upper hand since anyone wishing to travel had to get ‘republican’ money from the committee.”
Bolloten further notes that “Puritanism was a characteristic of the libertarian movement. . . excessive drinking, smoking and other practices that were perceived as middle-class attributes were nearly always censured.” [pages 68–69] All in all, an inmate at a maximum security prison in New York State today has somewhat more personal freedom than those who lived in Chomsky’s “libertarian” paradise.
There’s an economic critique of syndicalism there as well. Interesting read.