I personally rather 12 hour but I do not mind at all if it is 24 hour only takes a millisecond more to tell what the time is. BTW whats this poll for?
24 hour clock
12 hour clock
24 hr is easiest I think for an international forum like NB....whenever 2+ countries are involved you can't go wrong sticking to ISO recommendations!
Here's a similar question though..What Day of the week starts the week at NB? Sunday or Monday? Or do we care?