Private message etiquette

[Maks]

I think this is the right place for this old man rant, so here goes...it drives me bonkers when I'm doing a deal in a PM with someone and they don't sign their name. I've had zero problems on here w/that, everyone has always been personable and professional. It just comes off as rude, like hanging up the phone without saying goodbye. And if we are conducting business, we already have each others full names and addresses. So what's the big deal? I did a giveaway on another forum a few months ago and the guy asked me not to post his information publicly on the forum and he'd do the same for me. Why would I go around posting someone's private information? Rant over, does anyone else get annoyed when this happens?