To some people, 80.000 might mean 80 trias and...0 cents. =/
It's not a problem if you're familiar with the European system. It's just as valid as the American system, and since PS is an international community, we should be open to its use.
Following both number conventions in a community is bound to cause some confusion, at the least.
AFAIR the number "two-thousand and three tenths" would be expressed as follows in the different systems:
American - 2,000.3
European - 2.000,3
Calculator (Am) - 2000.3
Scientific notation (Am) - 2.0003 x 10^3
Which brings up several questions.
1. What about the rest of the world? Asia? Africa?
2. Which should we, as a community, use to prevent confusion?
3. Does the European system use a comma (,) for scientific notation?
I prefer the American system. Why? I'm an American. It "just seems logical."
Generally, I have stuck to the system American calculators use, as it causes less confusion when fewer than 8 (or so) places are used.
(Though meters, liters, and grams are obviously superior to the imperial system.)