There is also a difference between truly anonymous (where no connecting identity is established between different events) and what I'll call a form of pseudonymity (where an identity is constructed, with or without a known connection to one or more real identities, and that identity builds its own reputation). I do not consider Batman "anonymous" unless he does something without revealing that it was Batman who did it. Batman is pseudonymous, simply because "he" is a known identity, whoever may ever be behind it at any given time.