Hum... I didn't get into the trouble that I was predicting when I wrote about the falsified predictions of Arkani-Hamed et al. but ignored. Maybe people were making sure that my prediction is falsified! :)
Well then, here's another one. In this week's Issue of Nature, March 1, 2007, Clive Speake wrote about another prediction of String Theory made by Sundrum. In it, graviton is a "fat string", with a spatial scale associated with it at 90 microns. This means that the good old Newton's gravitational constant is expected to deviate from its standard value below 90 microns.
Well guess what folks, the same fate that has befallen the Arkani-Hamed prediction of sub-millimeter deviation may occur here too. A recent measurement of the gravitational constant made by Kapner et al. have measured the gravitational constant up to 55 microns, with no deviation from the expected value.
 R. Sundrum, Phys. Rev. D 69, 044014 (2004).
 D.J. Kapner, et al. Phys. Rev. Lett. 98, 021101 (2007).