@Darwin because you guys are too lazy to write the U in colour :P
I think the fact that America started off later, with all the energy of being “the New World” as well as the “cultural melting pot” of all those immigrants, allows for all sorts of innovation, revolution, fresh ideas. Not necessarily good ones, but new ones. Europe is by definition more conservative, stuck to tradition and things such as “roots”. In Europe History is always written with a capital H and has far too much weight attached to it. And Language is Holy. You don’t mess with Language. I remember when the Greeks decided to get rid of the various stresses which had actually been imposed by the Romans. As you probably know, Greek was originally all caps. When the government tried to enforce the monotonic system in 1981 (lower case letters but with only one stress to show where the voice goes up, not all the other symbols of how a Roman had to pronounce the word 2000 years ago), there were demonstrations, people refusing to use the new system, all sorts of complaints and interviews with scholars crying over the “Death of Our Language”.
I cannot see myself leaving out the U in colour either, so don’t expect me to start any revolution soon. My eyes hurt even when I see txtspk.