Groupon's Halo Effect

By Julia Boorstin, CNBC Correspondent With last week's ongoing rumors of Google's hopes to buy Groupon for billion, there's been a rash of interest in local companies; this could be the beginning of a a mini local bubble. On the heels of the announcement that Amazon is investing 5 million in Groupon's #2, LivingSocial.com, and that eBay is buying Milo.com, local advertising stocks were red ...

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