Starts a deep dive on how Netflix is doing recommendation

If you are not interested in big data area, better to off from here right away... :-)

Everything starts with based on this Netflix post (http://techblog.netflix.com/2012/04/netflix-recommendations-beyond-5-stars.html?m=1)

> 75% of what people watch on Netflix is from some sort of recommendation, so as to be called as "Everything is a recommendation".

> "Cinematch" is the recommendation engine system of Netflix. 

> There is a completed competition