Lots of sites have an upload blacklist so as to not hurt publisher bottom lines. They still get the occasional cease and desist for things that aren't making their way to this side of the ocean.
On the flipside, it could be argued that without fansubbers, we probably wouldn't be getting as much content brought over and translated, due to the unfathomable whims of the publishers. Here in Brazil, Naruto and One Pierce were already a hit among those who went around the internet looking for manga and anime LONG before they were brought over, and already had a reliable fanbase...