R is very powerful, but its use is mostly limited to statisticians. So providing a simple interface for people to leverage predictive models built in R is a great idea.

But their sample output (http://predict.i2pi.com/8MjSV2AA) just shows the distributions of all the input variables. I don't actually see any predictions.

Edit: There are no predictions there because there are no "NA"'s in the sample file to predict. You would think they'd create a demo file that would showcase the predictions!