Where are you from if I may ask? As far as I'm aware they are are pretty common, I know only of India which does them differently and maybe US / Canada? Although I think the point and the comma are switched in some countries, so a thousand Euros would be 1.000,00€
I'm from the US, but I'm not talking about thousands separators in the whole number. I guess a better word would be thousandths separators.
