Adding to the 'strange european things' : here in Italy we actually use the comma to separate the decimal points from the rest of the number.
Some variation, but the official way of writing "1,500.25" would be 1 500,25 around here - at least according to the style manual of the Helsinki Court of Appeal, which I happen to have.
Yes, I believe the official congress(?) of weights and measures determined that either 1 500,25 or 1 500.25 was the appropriate way to write.
So 1,235,567.89 would be 1 235 567,89 or 1 235 567.89 and so on...
Huh, very interesting. So its more a case of the US being the only ones to use a comma and decimal point much like were one of the last to still use standard vice metric. For some reason it disturbs my brain to see those spaces between the numbers, like youre looking at three seperate numbers.