If we talk about American English and British English---you all might know about armor/armour, color/colour, fraternize/fraternise, but have you noticed that "Traveling" is American; "travelling" is British. There are several other examples of British words with a double-consonant before "ing" having only one of the consonant in American English. "Gray" is American; "grey" is British. Good luck convincing someone on the street. :D Most Americans I know use "grey" (maybe because of Grey Poupon or Jean Grey; who knows?). "Defense" is American; "defence" is British. I've learned British English but I'm all for the American way of spelling, the words usually end up shorter and do the same job, that can only be a good thing. I mean, through or thru? hehe...