Some of SXSW's hottest startups say they're here to help small businesses compete, but eBay execs say those merchants want something else entirely. You'd think that wave-and-pay smartphone technology would be top priority for PayPal, one of the biggest competitors in the mobile payments space. But while big retailers love NFC for its hyper-targeted marketing potential , small businesses that run on payment services like PayPal may actually be interested in mobile payments for something far humbler: customer loyalty
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