AK, I don't think "netiquette" or legality should enter into it. To me it's cut and dried. I guess people should know who they are PM'ing though since I guess not everyone is Pollyanna like me.
AK, After re-reading my response to you, I would like to clarify it a little bit. I do agree with what you posted. I guess what I meant by my post was that I have always found it easier to "assume" that anything PM'd to me was meant to be private and that is the way I have always treated PM's. I would never consider reposting them publicly. To me it's more of a moral issue than a netiquette or legal issue. I once had my address and phone number posted on RB by someone who I thought I could trust.
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