There is a LOT more material on FR than there is on DU. The author(s) of that entry note that DU is sort of conspiracy central for a lot of really nutty ideas, but they only mention a couple of the worst ones, and omit details around, for instance Karl Rove's "impending indictment" (remember "Fitzmas"?), or how they reacted to Dick Cheney accidentally shooting his buddy (talk about a long, nutty thread).
The insanity found on DU would fill the Indian Ocean, perhaps the Atlantic Ocean, but there's little note of it.
Dummy Underground is home to 50% of the United States’ pedophile and welfare fraudster population.