R is the eighteenth letter of the modern Latin alphabet. Its name in English is spelled ar (IPA: /?r/; pronounced [??] or [??]). ...
http://en.wikipedia.org/wiki/R

The R programming language, sometimes described as GNU S, is a programming language and software environment for statistical computing and graphics.
http://en.wikipedia.org/wiki/R_%28programming_language%29

Network of FTP and Web servers around the world that store identical, up-to-date, versions of r code, documentation.
http://cran.r-project.org/

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show ...
http://www.flickr.com/

noun, plural R's or Rs, r's or rs. 1. the 18th letter of the English alphabet, a consonant. 2. any spoken sound represented by the letter R or r, as in ran, carrot, or rhyme.
http://dictionary.reference.com/search?q=R