[dwd]

It doesn't ask for any personal details to complete it.

Seemed accurate enough as the result I got correlated closely with one I did I few years back that was definitely more intrusive but eye-opening.

Someone setup a crawler that would take your HN comments and pass them to Watson's personality insights. I was brutally honest just now and the results were the same.

[m463]

There are a lot of tracking links on that page. It is THE perfect behavioral tracking info to attach to someone's online advertising profiles.

[dwd]

That would require them to be specifically tracking this questionnaire for that purpose and filing the results against your profile or shadow profile.

As I noted, it is possible to derive a reasonably accurate profile simply from the language a person uses, so if you're on Facebook, or use GMail they have enough data passing through their servers to profile you anyway.

Technology like this:

https://personality-insights-demo.ng.bluemix.net/

[BoiledCabbage]

Including Google or FB advertising id?