But there is one looming risk for PayPal as it faces potential regulatory issues from the Durbin Amendment, a piece of legislation that if passed, would shift payment of so-called "interchange fees" from merchants to financial institutions. This could put pressure on PayPal to lower its merchant fees. But eBay's CEO Bob Swan said during the conference call the legislation is not expected to have a material impact on the PayPal business. eBay has also been working to revamp its marketplace site to woo buyers and sellers with a redesigned homepage and cutting upfront fees. "Technology investments to improve the core marketplace business are beginning to see some return, and further enhancements during 2011 should improve growth rates," Susquehanna analyst Marianne Wolk wrote in a note. eBay is planning major upgrades to its search experience and user interface in several categories, including auto products, consumer electronics and home goods.