I have NEVER heard a people swear as much as the Irish swear but (down here at least) the word of choice seems to be Feck and that isn't really considered a swear....is it?
Must admit, since starting my wee job in a local shop I have started using that word a lot too. Since it forms part of the basic vocabulary amongst my co workers it easily slipped in.
I never swear infront of customers, or children where ever I am. I probably let the side down because if I DO swear (that F word), I apologise!!
On a night out with my bosses in my other job, I accidently let a swear out...apologised immediatly and one of them sat back and said "You swore!!...we're so proud!"