That site is a pseduocult, you might want to get your understanding of mainstream Christian thought elsewhere. smile.gif
Christmas day is not special because Jesus was born on that day (he was not), it is special because on that day, we celebrate the birth of Jesus and His Incarnation.
Translation: Christmas is biddah for Christians.
Why choose a day when people prayed to Idols?
That site was made by a Christian(Church of God), who felt that they shouldn't even celebrate this day of the "SUN".
They gave a pretty nice argument too....
They stayed away from the politics of sectarianism, and used a straightforward argument using the bible.