Darknets Are Inevitable

Slashdot has a posting about Darknets. I consider them an inevitable evolution. Tightly knit groups of users with their own private networks, tunneled over the available commercial Internet via tools like m0n0wall for example... The title of the /. article is Darknets Coming Soon?^(below), but I would think the real question is how long have they already been here, and how many are there?

Darknets Coming Soon?:

Anonymous Stalwart writes "CIO.com is running a story on darknets and their implications for security. With the ruling against Grokster, darknets seem poised to become a reality. How this will impact the future of the workplace, from top-level IT/IS managers all the way to non-IT jobs will depend on how the tech community that is developing this technology treats it."