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I just wrote a bunch of comments arguing in its favor but here's an article I just found with various criticisms I hadn't seen before: http://daryanenergyblog.wordpress.com/ca/part-8-msr-lftr/

I'm not sure how credible this guy is, because he talks about thorium-232 as a dangerous nuclear waste, with a terrible 14 billion year half-life. The problems with this are (1) such a long half-life means its hardly radioactive at all, and (2) that's the only isotope of thorium, which means it's the same stuff that exists in large quantities already in natural ore.

Also I'm not sure why he thinks U-232 has to be separated from the U-233.

Aside from that, he raises some interesting objections.

He may be exaggerating the complexity of the reprocessing system. Wikipedia describes it in detail: http://en.wikipedia.org/wiki/Molten_salt_reactor#On-line_rep...

Kinda wish I could delete that comment. Here's a bunch of people on reddit ripping that article apart: http://www.reddit.com/r/energy/comments/ifx40/molten_salt_lf...

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