[eeeeaaii]

I think you are missing the point that this poll is voluntary. So, the "Do not disclose" option is there -- just click on one of the many other links on HN today, or otherwise do something else with your time. There, you "did not disclose."

[sandyarmstrong]

But that's not really the same at all. There is a huge difference between not voting and voting with "don't want to disclose". The former is unusable as a data point, while the latter is something that can be analyzed and discussed.

[arcatek]

Sure. But by checking a wrong answer, we now have an unusable data point AND we have skewed the poll ...