As I was reading my stream of tweets my brain started to wander and think about that new eye movement technology Samsung, and LG are/will utilize to change smartphone screens with your eye movements.  As I looked at words in the tweets, the idea occured to me that privacy laws will need to accommodate a new potential frontier in advertising, eye focus advertising.   If a person looks at a word in a tweet for 3 seconds,  all of that eye focus data, how a person of a certain demographic looks at a particular word, how long, possibly their facial expression,  index and abstract that information,  it could give the concept of advertising a whole new meaning.  Big marketing is watching what you’re watching.   Brave New World.