Note: The domain RonCloud.com seems dead now. Read the comment section below for alternatives.
You have to see it to believe it. Go to roncloud.com and you can enter R commands in the browser-embedded console. Wondering how easy it would be to run R from a browser, on your iPad. I'm not sure how you would import data files, but I suppose R offers the possibility to open a file located on a web or ftp server, rather than a local file stored on your desktop. Or does it not? Also, it would be cool to have Python in a browser.