Paco Underhill, who is the world’s greatest expert on shopping, made millions for Macy’s and other stores by videotaping how people shop. Reviewing the tapes, he discovered, for example, that women will stop shopping for ties if the racks are too close to the aisle and people bump into them. Moving the racks made sales skyrocket.

Now, Etre is doing the same thing with websites. Watch the video here: Eye Tracking – Etre.