WhatsApp Users Surge, And It's About To Become A Skype Competitor

WhatsApp announced at the Mobile World Congress in Barcelona today that it plans to offer voice services in the second quarter of this year. The company's CEO, Jan Koum, also announced that the text and photo messaging service has more than 465 million users, which is up from the 450 million he said the app had when it was acquired by Facebook last week for $19 billion. Right now, WhatsApp lets you send short audio messages to friends, but a real-time voice service over the Internet puts it agai...