Whilst mouse tracking and eye tracking can produce heatmaps; the data they produce are very different. There is no significant relationship between the mouse movement and eye movement. We regulary demonstrate this with eye tracking session playback. Blame the wheel mouse and users’ total confidence in web.
Here’s another blogger misleading readers into thinking that click tales and crazy egg are a poorman’s alternative to eye tracking.
Watch some of the videos here and note where the eyes are and where the mouse is:
I blogged a little more about it here: