In French immersion we learned commas where an anglo would use decimals. So $2.00 would be 2,00 $ written in French, at least the way I learned it. Also in Italian the same reversal of symbols applies, so one million is 1.000.000 as Emanuela wrote. (I don't think this is new, it has always been around, but the increasing overlap of different cultures makes it more noticeable.) It's probably used more often there because the lira comes in "giant" denominations like that. A million lire isn't really as much as it sounds like - something like $717 Canadian or $469 US.

As for scientific publications, I have noticed an increased use of spaces instead of commas: two thousand three hundred and thirty eight would be 2 338, not 2,338. But that may be just a preference of certain publishers, and maybe since switching into oceanography I am reading more papers by those publishers...hard to say.