In quantum experiments the random outcomes are the same for all experimenters, so it can be repeated and the same probabilities will be observed. When you have someone else sending messages, you can't rely on them to behave the same for all experimenters. If there are a larger group of Muggers that different scientists could communicate with, than experiments might reveal statistical information about the Mugger class of entity (treating them as experimental subjects), but it's a stretch.
...on signing up for cryopreservation with the Cryonics Institute.
(No, it's not a joke.)
Anyone not signed up for cryonics has now lost the right to make fun of Paris Hilton,
because no matter what else she does wrong, and what else you do right,
all of it together can't outweigh the life consequences of that one little decision.
Congratulations, Paris. I look forward to meeting you someday.
Addendum: On Nov 28 '07, Paris Hilton denied being signed up for cryonics. Oh well.