I have read a number of articles that talk about companies such as Google, Facebook, and many others using R for research. The other scenario I have read about is companies using R to prototype an analytics solution and then re-implement it in another language.
I am trying to find literature on companies using R for actual production analytics code. A use case might be a recommender system that user interacts with via a web page that gets a response from an R script executed on a remote server. The fact that I am having trouble finding such reports makes me wonder if it is unadvisable. If so why?