Not really the forum for it but... I agree with SI units as the goal even with currency. However i also accept that there is no common understanding on how to write currency and the point of language and typing your idea into a forum or onto a page is to have people understand it. If I give someone 10G CAD, 10K CAD, or 10M CAD all three could mean $10,000 CAD. For some 10M CAD is $10,000 CAD and for others $10,000,000 CAD. For $10K people seem sort of unanimous on $10,000. But then there is 10MM CAD which is $10,000,000. So unfortunately to be clear you need to put (where G$ = a billion dollars). To make it worse people mix the capitalization up. 1 ¤CAD, 1 k¤CAD, 1 M¤CAD, 1 G¤CAD... that makes the most sense to me and I think sane people should adopt it just like a yyyy-mm-dd short date format where most significant digit is on the left and least on the right like numbers so it sorts properly. However, you need to footnote or tell people you are using this more intelligent format when you do because people not understanding is not meeting the goal of communication and therefore the brilliance is lost.