I spell it as favourite. Also, I think a lot of Aussie and British kids might've been confused (assuming they're around this age) when they were playing the game boy "color", and used pkmn "centers". In year 7, I remember arguing with the teacher that it was spelt "center" because it was that way in my game. D: That was when I learnt the differences between America and Australia.
Also, Kenji says "Auztralians" to annoy me/others. And, having to type "Womanizer" instead of "Womaniser" sucks. Though then again, it isn't a real word, so it doesn't really matter.
And. The U looks pretty. :3