In this July 17, 2006 file photo, an eBay and PayPal sign is seen at the eBay offices in San Jose, Calif.. EBay is exploring whether to require customers to use its online payment service PayPal, a move that has angered users and prompted antitrust scrutiny in Australia, where a PayPal-only rule takes effect in June 2008. (AP Photo/Paul Sakuma, file)

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