> Of course the catch would be it watches you, knows you by your face, and builds your advertising profile. And it would be enhanced to detect your emotional s

> Of course the catch would be it watches you, knows you by your face, and builds your advertising profile. And it would be enhanced to detect your emotional state from facial expressions, tone of voice, who you're with, your relationship with them, etc., and then suggest something (addictive) to cheer you up or keep you more excited. If someone didn't consider Facebook as being akin to an addictive drug, this one would prove them wrong once and for all! The sales pitch would be some drivel about meaningful connnections, interactions and experiences.