A couple of info viz notes:
See a map of Amazon's books:
Text represented as "binary signs" for the spaces you move around in:
This one puts me in mind of Semacode again, and makes me wonder about the possibilites of using ambient machine-readable markers in our spaces to link our machines with information. Kind of like a "magic eye" for computers that whisks the patron away to rich info resources.
Both found via http://infosthetics.com.