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For anyone with an interest in the English language (more precisely an interest in the complexities, problems, and inconsistencies in the English language) I refer you to Pain in the English. If you have questions you can submit to the site (upper right hand side). I cannot tell if it is a site with a US English or UK English focus. It seems to be both. Example,

Question:

Can you help me find the best word that covers the same concept as ‘mileage’ but for kilometers [...]

Are such neologisms as ‘kilometerage’ or ‘kilometrage’ used in English?