From the Political Compass FAQ:

When are you guys gonna learn to spell ?

This grievance comes from pernikety people who have leapt into attack without checking the FAQs ..and without even the remotest realisation that British and American words are sometimes spelt differently. They should have travelled more! We’ve been at the centre of some rancour, but we’re not going to take offence or harbour any grievances. The catalogue of their ill-informed certainties won’t colour this organisation’s programme. It’s a grey area anyway. And we don’t want to labour the point. Except to add that most of these cavillous correspondents seem to feel that they have a licence or a blank cheque for a level of rudeness that more civilised souls wouldn’t have dreamt of. In response, we nevertheless practise polite dialogue, enabling them to recognise that the error is entirely their own. (We manoeuvre them towards the Oxford English Reference Dictionary, which is also an encyclopaedia.) This leaves them quite defenceless, which may account for the fact that these less than honourable individuals virtually never apologise.

(Firefox’s spell checker flagged 24 words as I posted this)