I found the following information on various web sites:
http://www.of-worth.com/ea/Christmas.htm#Does%20Xmas%20Take%20Christ%20Out%20of%20Christmas?
http://www.pulseplanet.com/archive/Dec99/2041.html
http://www.etymonline.com/index.php?term=Xmas
http://en.wikipedia.org/wiki/X-mas
http://www.juiceenewsdaily.com/1104/news/history_xmas.html?1132372195109
http://www.coffeeswirls.com/archives/2003/12/12/the-meaning-of-xmas/
And from a FR thread from a year ago:
http://www.freerepublic.com/focus/f-news/1293598/posts#20
Thanks for the links. I'll read more of them time permitting.
So far here is what i've learned:
"In the animated television show Futurama, which is set in the 31st century, Xmas is the official name for the day formerly known as Christmas."