Often, I have to decide whichever is better in mail, forums, letters. For instance:
- colour vs color
- behaviour vs behavior
- humour vs humor
- rumour vs rumor
- honour vs honor
- armour vs armor
The difference comes certainly from the country of origin of the writer — basically Americans write o and English people write ou. Please confirm that.
(By the way, all the words left side are underlined in Firefox, since the spell-checker is set to “American English”)
What I would like to know — from a non-native English speaker perspective — is if it really matters, nowadays with the new technologies and international exchanges, to make a distinction between "ou" and "o"?
Does it hurt the reader if they are both used in the same text, mixing colour and honor, or even worse, colour and color?
What is the current trend?