Surprise is an easy-to-use open source Python library for recommender systems. Its goal is to make life easier for reseachers who want to play around with new algorithms ideas, for teachers who want some teaching materials, and for students.
The New York Times is buying The Wirecutter for more than $30 million
I spoke with Lam about how he built his business, and whether he wanted to sell it, on Recode Media in June: