First, they would not be 100 % invisible. As long as one knew the number, they could get to it. And if I see two consecutive newest nodes, 70500 and 70502, I can probably geuss that 70501 is a 'private' node, and I can just type that into a url to see it.

To solve the problem with people abusing the system, simply limit the number of private nodes one user may have (I see no reason to have more than 5 at a time, for example), and *possibly* limit the ability to above a certain monk level, maybe 3 or so, so that throwaway accounts aren't used to DoS the site.

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Dr. Michael K. Neylon - mneylon-pm@masemware.com || "You've left the lens cap of your mind on again, Pinky" - The Brain