I send a polite 'Merry Xmas' to the Yanks because they are business associates of DH. The others are friends of my parents, so again, they get a hastily written 'Seasons Greetings' out of politeness.
In return I get their life fucking story.
Oh, and I suppose I get a few cruel laughs, the sort that make you feel like a bad person, but also secretly make you happy that no matter how sad you are, you aren't as sad as the people who choose to tell everyone in their address book at great length about what happened when their goldfish died...