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Two reasons to avoid talking on your cell phone as you walk down the street? For one thing, you're a lot more likely to get mowed down by a car, according to two new studies. (Chatty college students took 25 percent longer to cross the street than their peers who weren't on the phone; people over 65 in the same situation were 15 percent more likely to get run over.) Reason No. 2: As one Vanity Fair staffer's recent experience makes clear, you're also much more likely to get your ass kicked. Consider yourself warned. [Daily Finance, Page Six]