A system and method for bonding a pseudonymous identity to an organization to provide assurance that a user claiming to be a member or representative of the organization may anonymously post messages or documents to electronic forum. The system and method includes distribution of tokens from an authentication authority to the organization which can then be provided by the organization to its members. Members register with the authentication authority and designate a pseudonym to associate with the organization and also provide the membership token as proof of membership in the organization.