Australian or United States English?

As an Aussie I am often left wondering whether to type things on the web in Australian English or US English.  There are actual a fair few differences - although seemingly minor, they are still differences and might be seen as mistakes or errors in another persons eyes.  Just a few of the differences I’ve noticed:
Aussie English ’Mum’,  US English ’Mom’
Aussie English ’cheque’, US English ’check’
Aussie English ’authorised’, [...]

The Time Clock – a.m. or p.m.?

Let’s talk about the time!  First of all lets talk about a.m. (ante meridiem) and p.m. (post meridiem), or the 12 hour time clock.  According to ‘The Cambridge Guide to Australian English Usage’ noon = a.m. and midnight = p.m. as follows:
“…pm times begin immediately after noon, and so the first minute after 12 noon (= 12 am) [...]

Now to look at positive versus negative statements

Click here for some examples of how a negatively written statement can be transposed in to a positive one.