By Alistair Barr SAN FRANCISCO (Reuters) - PayPal has opened a new data center to help the online payment division of eBay Inc handle its rapid growth, President David Marcus said on Tuesday. The addition means PayPal now has four primary data centers, which it runs from network operation centers at its headquarters in San Jose, California, and Scottsdale, Arizona. "We're growing still very, very fast, so we need more machines, more capacity and bandwidth," Marcus told Reuters in an interview.

Mobile payments startup Square's new Square Cash allows users to email one another money.

By Kang Yoon-seung SEOUL, May 21 (Yonhap) -- South Korea's credit card spending grew at a slower pace in April from a year earlier as the economic slowdown continued to dent consumer sentiment, a trade association said Tuesday. Purchases made with plastic cards totaled 44.8 trillion won (US$40.1 billion) last month, up 4.5 percent from the 42.9 trillion won tallied a year earlier, according to the data compiled by the Credit Finance Association (CREFIA). The country's card spending sank to an all-time low in February, growing 3.4 percent on-year.

Available initially to US Google Wallet users aged 18 and over, the system works by clicking on the dollar sign button that will soon appear in Gmail and then typing in the amount to attach.