freenet is probably the most reasonable alternative since the content is distributed amongst clients, and therefore there is no central point that can be "shut down" by governments. The downside, of course, is that almost no one will see your content on freenet (or a smaller darknet) and whether that still counts as "publishing" in the same sense as getting a publicly-available server connected to the internet. If you are doing something like WikiLeaks where you're really relying on normal news outlets to do the real legwork for you, this may be feasible, but if you aren't doing that for whatever reason, it practically would be the same as saving a text file to your hard drive -- i.e., no one, or almost no one, will ever read it.