Since it's part of my group's job to publish daily billings report to the management, our Director (from US) pinpointed that we should fix the spelling of 'nett billings' to 'net billings'.
My colleauge was looking at google, trying to understand the 'right' spelling to be used.
I finally checked it from Wikipedia, and found that 'nett' is BRITISH and 'net' is AMERICAN.
No wonder he's offended to fix it to 'net'!
C'mon. I'm in an american MNC, I should be more sensitive towards this.