Non-Scientific 3DS Survey

[Saffro Saf]

To all those who own a 3DS, please tell me of your experience of the 3D effect on the 3DS through these following questions

How long do you play the 3DS with 3D on in a sitting?
How many games do you play with the 3D effect constantly on?
Have you suffered any headaches/tired eyes through a play session?
Do you struggle with getting the 'sweet spot' in 3D?
If you do, what games are examples of this?
What games do you feel doesn't require any effort to find the 'sweet spot'?

If you feel i have omitted questions that would be useful for this, please tell me.
The purpose of this survey is to decipher how much of the stories pertaining to the 3D effect is true and what are fictitious. This survey is not a forum for your opinions concerning the use of 3D as a gimmick to innovate, disrupt markets, etc. So i ask for your honesty with your time with the 3DS whether you spent a small amount of time with it or a large amounts.
Thank you for your time.

[WAALUIGI]

Never had any problems with headaches or eye strain BUT when i went to a 3D seminar that sony did here a couple of days ago i did get a small headache, must be the glasses...

[Muzy72]

I play with full 3D on everytime I play a 3DS game. No eye-strain or headaches ever.