Hooray! Somebody sent me a card!

Now, who was it?

I received a very nice Gmail Holiday Postcard in the mail today featuring a DIY Dreidel, I assume in response to my sharing this article about the offer. But it's not signed by anyone...

It only has two lines in the message area:

Happy Holidays!

. o O ( Awkward... )

Who sent it? Was it you?? [Thank you, whoever you are!]