[labster]

I didn't know reputation was measured in millimeters.

[jl6]

MM is widely, though decreasingly, used in legacy finance:

https://english.stackexchange.com/questions/181917/mixing-us...

It’s also used by finance-outsiders who want to look like they are finance-insiders, a bit like how people will casually write GOOG and AMZN instead of Google and Amazon.

[pestaa]

Could be the amount of ink required to print out the actual number.

[lucb1e]

I don't get this either, it's not as if there are two "m"s in the word million. I must be spelling it wrong.

[nsgoetz]

I believe it come from mille - Latin for 1000. So 1mm is one mille mille or one thousand thousand. Why we use the Latin? I have no idea.

[smt88]

mm is a less common abbreviation for "million," but it does appear often in the US in finance and accounting