Everywhere in town, you can find people, mostly Africans or Asians, selling stuff on a blanket (top manta means on the blanket), stuff like DVDs, fake Louis Vuitton bags and belts, watches, perfume, all from famous brands, obviously all fakes. A couple of months ago, you could get Slumdog Millionaire DVDs (if you haven’t seen it, what are you waiting for? Go!) the very day the movie came out in the cinemas, for 2/3 euros. The sellers are mostly illegal immigrants, obviously without a trade licence. Whenever a policeman shows up, they scamper and disappear, to come back 5 or 10 minutes later. Their system: 2 wires attached on opposing ends of the blankets, the whole ware can be picked up instantly.
It is of course illegal. And it is also illegal to buy from them. Someone made a bargain in my area a couple of months ago, bought some fake branded jeans, got caught, got a nice big fine and 6 months in jail. So, please watch out, next time you visit Barcelona!