In advertising we will look at what the person we see in an ad is looking at. If they are looking out at us we will simply look back at them and not really anywhere else.
One wonders how well this works on the web when selling products and/or services. <img src="http://img.skitch.com/20100202-qqx1h628418c4wr1d45sic7pd9.jpg" alt="Carlos" /> What did Carlos make you look at? <img src="http://img.skitch.com/20100202-fst8xrudpxcgpt7kwahnp2238r.jpg" alt="Carlos"/>