Okay, if I post it again in a pretty colour, will you read it?
The Origin of "Xmas"
The abbreviation of "Xmas" for Christmas, long reviled by many conservative and Low Church Christians, is not nearly as blasphemous as many contend. Rather than a sacrilegious removal of "Christ" from Christmas and replacing him with an unknown, as some claim, the "Xmas" abbreviation has a long history in the church. In Greek, the language in which the New Testament was first written, "chi" ( c or C), which is almost identical to the Roman alphabet "X," is the first letter of the word "Christ" ( cristoV , or as it would be written in older manuscripts , CRISTOS ). In fact, the symbol of the fish in the early church came from using the first letter of several titles used for Jesus (Jesus Christ Son of God Savior) that when combined spelled the Greek word for fish ( icquV , ichthus).
In the early days of printing when typesetting was done by hand and was very tedious and expensive, abbreviations were common. The church began to use the abbreviation C for the word "Christ" in religious publications. From there, the abbreviation moved into general use in newspapers and other publications, and "Xmas" became an accepted way of printing "Christmas."
http://www.cresourcei.org/cyxmas.html