Quite a few posters here have suggested that the celebration of Christmas is far less religious than it used to be (and that many non-believers celebrate it without caring that it's about Jesus Christ). This study confirms that.
I agree that it is more of an American tradition, here.. than about Jesus.
I am also wondering how to incorporate the Gospel into the celebration of Christmas... The tree and Santa have nothing to do with Jesus. This attempt proves how much influence our Pagan roots still have in our lives.