| | Re: I'm fine, thank you.
Interesting. I wonder if it's a British/American English thing. Any Brits out there who can let us know?
In the States, I'd say even 'How are you?' isn't used that much. That may be why 'I'm fine.' sounded so strange the first 500 times. (Now, I don't bat an eye at it.)
How are you doing?
How's it going?
How have you been?
Those are all far more common in the area I'm from.