I ‘ve  recently read a few articles (some links below)  regarding eye-tracking software and its application to HCI/usability research that were quite interesting but they also brought up a few questions, like:

• Is eye-tracking still on the margins or is it a relatively common tool in the UX toolbox?
• Is it cost-prohibitive from a ROI perspective?
• Is there consensus on the efficacy of the results?

I realize that the questions may seem basic but, remember, I’m currently a hobbyist not a professional (YET!) so I don’t have a context for how much penetration eye-tracking software has in the UX world.  I did notice that Whitney Hess on her Pleasure & Pain blog mentions that..