Famous science-fiction author Cory Doctorow once used a decentralized, censor-resistant "alternate" internet called the Xnet as a plot device in his book called "Little Brother". Xnet is a decentralized netowrk similar in design to The Onion Network and Freenet - every data packet transmitted trough it is completely encrypted, etc. In the book it was primarily used as a secure communications network that can be used by anyone - the main character, w1n5t0n, connects to it via a hacked future version of an Xbox running a fictional, security-minded flavor of Linux caled ParanoidLinux).
I haven't read the book in a long time, so my description of the Xnet may be a bit fuzzy. It would, however, be really awesome if some real life version of the Xnet in reality. It could be the safest (and in a worst-case scenario, the last) option to securely transmit information.