Anonymous
From Telecomix Crypto Munitions Bureau
Meaning, not identified at all. Anonymity is different from pseudonymity.
[edit] The Anonymous
Everyone that does not select a nickname before they start posting. There is no membership, and no organization.
Sometimes groups of anonymous cluster together, while working on projects. Sometimes they start using pseudonyms when they do this, to simplify division of labor.
[edit] The psyop
Despite anonymous being random people without names doing stuff, it is often thought of as "a group of people."