We put a lot of effort into making our content perfect and we always appreciate it when members pick up on any odd errors we make and let us know. However, there are differences in spelling of some English words in various countries and Americans do tend to use “z” in some words like “organizing” instead of the English spelling “organising”.
I have had a few emails trying to correct my spelling of “organise”, but as we are in England we will stick with the English spelling of words, otherwise I would get a raft of emails about getting the spelling wrong from our English members!
There is an article on this here
Hope that helps!