Huh?
Ummm, actually, DropBox isn't banned in China anymore. It hasn't been for a looooong time. Maybe that needs to be updated? :/
@Jim - What has providing a service to a certain country got to do with 'ethics'? It's not like they are doing business solely with the Chinese government, as many American firms do. So why criticize them for trying to do business in China, with Chinese people? Do you have something against Chinese people?