Don't Visit without an Invitation

I have a cell phone, a land line, two postal addresses (street and box), and email. So when a friend I hadn't seen in a year, showed up a *1 am* recently, without any prior contact via ANY of these channels, it was unsettling. And the place was a mess, which was embarrassing.

Don't impose on people you like by visiting unannounced.

-- crabby Aunt Rachel

In subsequent weeks, this person came by twice on work nights and left a note, complaining I wasn't home. He had still never called or used email to contact me.