For years, the webmail service provided by Hushmail has been an example of weak anonymity and privacy: They don't ask for much to set up an account, they will happily auto-generate an e-mail address for you, users connect via SSL, and they will encrypt and digitally sign any messages a user sends through their service. They also claim that all messages are stored in encrypted form on their disk arrays, so that even if someone did demand a copy of a message from a certain address it would be worthless to them (ostensibly, public key encryption is used on the …