The european/american thousands separator always manages to confuse me for a second: "Two Euros a month? Who gives a crap?"
Why that is, I can only take a stab at: I guess we see a lot more from you guys on the other side of the pond than you see from us. :)
[1] Comma overload -- my English teacher would kill me.
Even within Germany, there's no consensus about where to put the Euro sign (before or after). Americans don't write times like 20:00 and say "eight" aloud. After several years in Europe, I'm fairly adept at accepting all inputs.
Google Chrome will translate web page languages, which is a much more difficult problem.