ComiPress has translated a Chinese article on unlicensed manga downloads in that country. Apparently the practice is common over there, but the article warns:
However, the current Chinese trend of providing download to manga and other material without license is like a cup of poisoned wine mixed with honey. The deal tastes sweet when it first goes down one’s throat, but nobody knows when the poison will spread through the body. If the government suddenly begin hunting down license-less online download sites, most major websites will go down, and perhaps the Chinese online manga community, which took years to develop, will become extinct in one night.
Much of the focus is on a site called Greedland, which recently changed hands, but there is plenty of commentary on the industry in general, both the risks and the rewards.