online book: "Clojure from the ground up", site: "Factual"

Another "book in progress" online:

Clojure from the ground up: by Kyle Kingsbury.
Clojure from the ground up: welcome

podcast: Blog | Kyle Kingsbury - Cognicast Episode 048 | Relevance

company: Factual | The Location Platform Enabling Mobile Personalization
in San Francisco

GLOBAL LOCATION DATA
Tap into definitive data on over 65 million places, updated and improved in real-time by Factual's data stack.

It gets more interesting!

Factual | About Us

Factual was founded in 2007 by Gil Elbaz, co-founder of Applied Semantics (which launched ASI’s AdSense product). Applied Semantics was acquired by Google in 2003...

And that was the tool that made Google's profit engine so effective!

Clearly, they are very knowledgeable... 

And apparently, they are using Clojure...