Your feedback requested: Conspiracy theories outside the U.S.

Unreasonable Faith posted a story about a Republican congressman's surreal experience meeting with Tea Party voters and being asked a serious question about the government selling individual Americans to banks via Social Security. (His went with "look confused and nod a lot" for his response, and I can't blame him.) But the blog also asked an interesting question: Are conspiracy theories an American thing? It occurred to me that—both anecdotally and in random Wikipedia reading that I've done—the vast majority of conspiracy theories I've heard about were rather sharply America-centric. Is that just selection bias on my part? Citizens of the world, what wacky plots are out to get you and your countrymen?