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Now Playing: 11-18-11 Marketplace Money

Social media have changed the way we do pretty much everything, including spending money. We'll hear about the birth of "cash mobs" in Cleveland. And, forget those daily deals and sales. There's another way to get a bargain on that thing you want. Turning old into gold. Plus, if only you could go online and get help finding a parking space before you arrive. Also, we learn how to test whether you can handle using a credit card or not.