Investments in foreign currency can sound like a great idea, and scammers frequently use real current events and news stories to make their pitches even more appealing. They advertise an easy investment with high return and low risk when you purchase Iraqi Dinar, Vietnamese Dong or, most recently, the Egyptian Pound. The plan is that, when those governments revalue their currencies, increasing their worth against the dollar, you just sell and cash in. Unlike previous hoaxes, you may even take possession of real currency. The problem is that they will be very difficult to sell, and it's extremely unlikely they will ever significantly increase in value.