Yes, I know how people in the US spell those words, my comment on tonne was on the same level as the rest of the petty points I made about the fig newton joke (we don't even have fig newtons here but I got the point). In Australia we wouldn't refer to metric tons (or metric tonnes) because the term would always mean 1000kg here, not 2240lb, we would just write tonnes. When I was learning Chinese I always used simplified characters (I was lazy) and I know they are used in the PRC but not ROC or Hong Kong [Xiang Gang in Mandarin] (and they only affect writing, not speaking, so no one speaks in simplified characters).