In darknets, there is no public entry point to the network, making it difficult or impossible to know what’s being shared. The very term “darknet” makes the whole process sound mysterious and quite possibly illegal, but such a darknet can just as easily be used by a family to share photos and video content.

Nate Anderson, via Ars Technica, go to the original article for more:

“The new version of P2P client LimeWire—now at version 5.1.1—has been in the news lately for a feature that makes it simple for even the newbiest newb to create a “darknet.” Nothing here is technically ground-breaking, but LimeWire’s massive install base means that millions of users now have a secure and simple way to share files with each other and no one else.

Darknets are going mainstream, something that could make it more difficult than ever for rights-holders hoping to monitor public P2P networks in order to pick off offenders. That process, already difficult enough, could get a lot harder as such tools migrate out from the geekerati.”