America vs Britain

I have always felt a sense of confusion and panic when spelling the word centre... or is that center. Ah. Thankfully I stumbled upon Susan Jones' American vs. British Spelling Differences. Maybe I will memorise this so when someone manoeuvres to criticise (I am looking at you Microsoft Word) correct spelling I can stop any arguement and be skilful in defence by pointing to this site. What a great programme, maybe I should add it to our catalogue? Thanks Susan.