I received a Christmas card…
..from ArenaNet. A nice card with what I guess is Gwen and 2 Asura in Xmas outfits on the front and a couple of signatures from people at ArenaNet inside.
I have not reason to believe that I am singled out in any way, so I guess they might have randomly selected a number of Guild Wars players and sent them cards. At least I do no think they would send a couple of million cards to everyone.
Either way, I do appreciate the gesture even if it was random. Thank you ArenaNet!