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Now Playing: 11-07-13 Marketplace - $Twtr

Twitter may be a household name -- but it's not used by everyone in every household. What happens when companies launch a product complex enough that they have to explain to potential users how to wade through it? Also, preliminary third-quarter data today suggest that retailers are stocking up on goods, but consumers aren’t buying them. And finally, the FDA says trans fats is officially bad, and that  poses big challenge to makers of processed foods that depend on them for shelf-life, price and taste.