I guess you can tag me as well, since I've admitted doing the same thing in the past.  I never posted anything as far as personal information, nor did I realize it was such a big deal (though I haven't posted a PM in a thread in quite some time).  If the community now thinks it's inappropriate to do so, I have no problem following that.  And I'm not worried about getting tagged, just wondering what the community consensus is.

It's not against the rules, but that doesn't mean it's not a reason to leave someone a neg for it--just like account selling.  But my own opinion is that it's not such a violation of community standards (or even such a big deal in general) as to deserve a neg.  If you send someone a PM and don't want it quoted, the best thing would be to let that be known up front.