Twitter Buys CardSpring

San Francisco-based Twitter said Thursday afternoon that it has acquired CardSpring, provider of software APIs used to connect companies to credit card and debit card data. Financial terms of th ebuy were not disclosed. CardSpring was venture backed by Accel Partners, Felicis Ventures, Greylock Partners, Morado Venture Partners, and SV Angel. CardSpring was based in Palo Alto.