Sybil attack

[Frederick Hirsch <frederick.hirsch@nokia.com>]

An attack on reputation systems, where an attacker can create number  
of entities to thereby impact reputation values of another party.
http://en.wikipedia.org/wiki/Sybil_attack

thus I suggest a reputation value may need to include some indication  
of trust in the reputation figures in addition to other measures as  
part of the value(s).

regards, Frederick

Frederick Hirsch
Nokia