>As to his anecdote - I stuck dozens of people in my dk2 and many were nauseous, myself included.

It's all about the software. I've been developing DK2 based experiences for trade shows and have seen thousands of people try VR for the first time. Perhaps 1 in 100 suffer from simulation sickness, but this highly depends on the application. E.g. One of my first prototypes made everyone that tried it very sick - including myself (this due to a single camera movement mid-experience - flying over a rail & then spiralling up a staircase).

Unfortunately, beyond the scarce info on the subject of sim-sickness - my experience has been derived completely from trial & error.

I'd like to see more specific information shared on the subject of simulation sickness.