1. A pseudonymous email address generator comprising: a request interface configured to receive a pseudonymous email address generation request, the request being associated with a requester, the request containing identification information including at least an address associated with the requester; and a computer-readable storage medium embodying computer-readable instructions that implement a pseudonymous email address creator configured to: create a pseudonymous email address associated with a mail server in response to the received pseudonymous email address generation request, associate the pseudonymous email address with an email address, provide the created pseudonymous email address and its associated email address to the mail server, cause the created pseudonymous email address to be provided to the requester; and use the address associated with the requester to correlate monitoring for additional pseudonymous email address generation requests to ascertain whether the address associated with the requester is associated with an email address harvesting entity based on said additional pseudonymous email address generation requests having a characteristic similar to a profile established for one or more email address harvesting entities.