You seem to be trying to implement plausible deniability in email. People are actually capable of rich probabilistic reasoning on communication, but not in the

You seem to be trying to implement plausible deniability in email. People are actually capable of rich probabilistic reasoning on communication, but not in the same way that you're thinking. That is, making electronic plausible deniability more feasible is the kernel of an interesting idea but your implementation doesn't tap into human psychological hooks. Instead of "25%", if you showed pictures of four Facebook accounts and said "one of these sent you this message", that would get the effect you seem to desire. Might be an interesting viral dating site. Another interesting variation could be for performance reviews or political/government statements. Anytime someone wants to send a message, has an identifiable group from which that message would be seen as legitimate, yet also wants to preserve a degree of plausible deniability...this could be interesting. Suppose someone wants to float a trial balloon to find out what "coming out" as a conservative on Facebook would do. Imagine the wheels turning when it just says "one of the following frienda posted this". It's kind of like the Crushlink scam...humans are fundamentally motivated to try to put a return address on certain kinds of sensitive communication.