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New media sites like Buzzfeed and Upworthy have mastered the art of "clickbait": headlines and content designed to drive as much traffic as possible to their sites. One technique is to use coy headlines like "If you take a puppy video break today, make sure this is the dog video you watch." (Gawker apparently spends longer writing a headline than the actual article.) But the big stock-in-trade is "listicles": articles that are, well, just lists of things.

The site provides quarterly statistics on programming language activity on GitHub, by number of repositories, pushes, forks etc. Ranked by number of active repositories on GitHub, R is the 12th most popular programming language as of Q4 2014. JavaScript, Java and Python appear as the top 3 in the same list.

James Peruvankal
Sr. Program Manager, Revolution Analytics

In case you missed them, here are some articles from January of particular interest to R users.

Slides on reproducible data analysis with Revolution R Open and the checkpoint package. 

Ever wondered why rivers take such meandering paths on their way to the sea? Minute Earth explains in this short video:


Sentiment analysis has been widely used to infer the mood of customers in emails, tweets and other short communications. The base assumption is that the sentiment is a fixed value: the email is either angry or happy; positive or negative.

Hadley Wickham's testthat package has been a boon for R package authors, making it easy to write tests to verify that your code is working directly, and alerting you when you make changes to your code that inadvertently breaks things. 

by Siddarth Ramesh
R Programmer, Revolution Analytics