Take a look at the latest blog post, which should address the confusion you ment...

		nickstinemates on Aug 8, 2013 \| parent \| context \| favorite \| on: A first look at docker.io Take a look at the latest blog post, which should address the confusion you mention: http://blog.docker.io/2013/08/getting-to-docker-1-0/. The blog addresses the direction that Docker is headed in and who the core audience of the tool should be.