@classicalcynic,
												classicalcynic wrote:can you report pms?
 
Yes.  But I'm not sure how exactly.
classicalcynic wrote:also who can see private messages... without hacking...
 
I assume only the sender and the receiver in normal cases.
I presume that, since PMs can be reported for abuse, if someone reports a PM it is then subject to some sort of review.
I expect that if the FBI showed up with a valid search warrant for a given person's PMs, they would be granted access.
But these are assumptions, presumptions, and expectations on my part.  I don't have concrete knowledge.
Does a2k have any "terms of service" or some such?  Perhaps the information is contained there.