What I can see happening with this as FreeNet advances is the migration of the crowds that are on the other p2p services running.
Emule and the related at a quick glance this morning has 3.2 Million Users showing, 316 Million files. For a rough on Bit Torrent TPB is showing 10 million peers and 1.2 Million Torrents going. Both Systems have a form of server contact that makes them open to attack not only in disruptions of service but legal issues related to "File Sharing" regardless of what the content is. Free-Net offers considerable more in a service than just file swapping, and it is very much like the old Gopher Service. That was not a very neatly organized system relying heavily on bookmarks and old fashion digging to find the gems on the system. There where a few index's but it was a lot of looking around and exploring. Should freenet see the migration of the current p2p file swapping this can see the system go from a couple thousand nodes into the range of double digit millions. A large portion of that crowd will remain on an open net set up its human nature, click install it opens type your search click download if it works never look back. With the file system alone given the insert proceedure if you take 300 million files calling it say 250meg as a an average that is 75 million GB. Using a 3 copy redundancy 225 million gig, at 10 million users even that is a 22.5 Gig File Store Each. If FreeNet achieves the security making it impossible to then trace the two alternatives left to the powers that be are out right banning the program making it illegal to run in any form. And the second is attack the network directly from the inside with the security in place the only option would be to then Flood and Abuse it to a point of no longer usable. Easiest abuse in this would be the continuous insertion of faked files, 200 locations uploading a dvd or blu ray image and a couple hundred others making requests to keep the system burdened. OpenNet/DarkNet offers some defense to this form of attack
