January 28, 2012
Yes, it is the central part of our toolkit at work, along with Python and MySQL. I use it every day.
I am fairly proficient, I use R mostly for final model estimation and visualisations, mostly after summarising the data using mySQL and python.
I am a quantitative analyst at newBrandAnalytics, a DC-based start-up and an applied economic/quantitative methods masters student at Johns Hopkins University.