Would you confront someone who was smoking in a clearly posted "No Smoking" area, in which you were seated?

Yes, because I suffer from asthma and am allergic to cigarette smoke, which further irritates my asthma to the point in which I can't breathe. The law, my health and frankly theirs is more important than their addiction.

have done so & will continue to do so

If I could smell it, it's blowing in my direction I would ask them if they could go to the smoking area. If they got all uppity with me I'd go and seek a manager. I haven't got the patience and sometimes having back up is needed.

Yes. You can always just flick water at them. They usually get the hint.

Or... ask the waiter/waitress to have three removed.

Everybody would

No, I probably wouldn't even notice. I'm so used to smoke

Yes I do not want secondary smoking or lung cancer.

Yea

Always

Yep, I most certainly do.

I wouldn't direct them, just give them a heads up on the existence of the sign.

I don't have any problems with confronting people but I'd let that one slide.

I'd probly just leave

Nope, I'm not the police.

I am anti-authority so I'd applaud them

hell yeh! they don't like it i'll go into a rant about my wife who has non-small cell late stage lung cancer.. they still don't like it i'll tell them "oh, ok... call the police then!"

Are we speaking of a no smoking area outdoors?

I mean...anywhere indoors is already non smoking....If they are smoking indoors then yes...someone ought to tell them that they cannot.

Unless they are in front of a building door then no..they have a right to smoke outside.