What is Anonymity and what is Identification ?
Anonymity is the inability to link a NodeID to a physical person (read IP address). Identification is the ability, for instance, to know what node ‘owns’ a shared file. Identification is provided through the use of strong cryptography (digital signatures), and as direct benefits, allow to resist to fake attacks (only the owner of a file can modify records he created) or allow content/nodes blacklisting without compromising anonymity.