ReadWriteWeb

Feng-GUI is an interesting heatmap creation service. Unlike click-based heatmaps from Crazy Egg, FuseStats, and others, Feng-GUI creates heatmaps based on where it thinks the human eye would most likely be attracted. Eye tracking is something that designers have long used to measure the effectiveness of advertising, or design more usable web sites (among other commercial applications). But Feng-GUI doesn't use real eye tracking, which would require that humans look at each object being measured and would hardly scale very well. Instead, the site uses an algorithm that attempts to guess what a real human would be most likely to look at.