Really grizz, I don't think they're using chloride as a binder material solely to keep out iodne and keep us unhealthy. That sort of thinking sounds too deep to be a conspiracy theory, don't you think? They probably picked chloride because it's cheaper or because it's a better binder, that's all.
That part about the excessive riboflavin and niacin is interesting. I'm still working on my first bottle of B complex, but I'm now taking two pills for a total of 200 mg niacine 10 mg ribo. (I think, I don't ahve the bottle at the moment.) I too am getting the bright yellow urine, but nothing dark. I'm a bit hesistant about going up to the full ATP cofactor dose.
I haven't started the full iodine protocol yet. I'm still waiting on that.
5'0" female, 44 years old. Started Primal October 31, 2011, at a skinny fat 111.5 lbs. Low weight: 99.5 lb on a fast. Gained back to 115(!) on SAD chocolate, potato chips, and stress. Currently keeping food tracker.
I (try to) follow by-the-book primal as advocated by Mark Sisson, except for whey powder and a bit of cream. I advocate a two-month strict adjustment for newbies. But everybody is different and should tweak Primal to their own needs.