What do you think of Thorium LFTR Nuclear Reactors? [View all]

I remember seeing a very positive sounding article in the local paper a couple years ago on this technology, but heard little of it since in the mainstream press. Here's a short Huff. Post article I dug up on google:

http://www.huffingtonpost.com/victor-stenger/lftr-a-longterm-energy-so_b_1192584.html

Sounds very promising (much cleaner, not practical for weaponization, cheaper, waste that is safe after a couple hundred years rather than a thousand, etc), but I admit my education level on physics and energy production is way below the level needed to confirm anything or spot drawbacks.