Tangential, but does anyone else find it difficult to assess their happiness with a given interaction beyond the ternary states of bad, meh, and great? Usually questions associated with satisfaction are given a scale of one to five, or one to ten. My responses tend to be at the ends of the spectrum or indifferent.
This slider is interesting in that I somehow identify with the state of the slider. There's an emotional feedback I feel with the state of the face on the slider. At some point, I feel that the face and my feelings match. I think this would allow me to offer a more detailed insight in to my feelings about a particular interaction, provided I was asked for the feedback immediately.
This is exactly what prompted us making this thing---some of my co-workers at oDesk were talking about how dissatisfied we are with the whole 1-10/NPS score way of getting feedback.
As far as the slider---my motivation was that humans are sensitive to the emotional content of even very tiny changes in a human face (which is the logic behind the Chernoff face http://en.wikipedia.org/wiki/Chernoff_face) and that the smiley-faced slider would get people to (a) use the "same" scale for conveying their feelings and (b) convey their feelings more precisely. It's on our agenda to do some tests with it---shoot me an email if you want to try it on your site & see how it does. It probably won't make it into our product too soon :(
I would very much love to hear on HN about any results that you or anybody else come up with. My suspicion is that if this works out as you intend the distribution won't even require any fancy math to show people use it differently, it'll be blindingly obvious in a histogram. It's brilliant.
This slider is interesting in that I somehow identify with the state of the slider. There's an emotional feedback I feel with the state of the face on the slider. At some point, I feel that the face and my feelings match. I think this would allow me to offer a more detailed insight in to my feelings about a particular interaction, provided I was asked for the feedback immediately.