Agreed, I think cup is irrelevant outside of US - UK - AUS. Here it's just like saying drink "4 glasses of milk" - how much is this exactly? As usual it's a bit

Agreed, I think cup is irrelevant outside of US - UK - AUS. Here it's just like saying drink "4 glasses of milk" - how much is this exactly? As usual it's a bit obnoxious to think your only customers / users come from those countries.