Watch out for WhatsApp. The mobile messaging smash has grown to a captive audience of more than 300 million people, up from 250 million active users less than two months ago. The 4-year-old service is also expanding in function to include a new type of messaging.
"Today, we're proud to announce that WhatsApp has surpassed 300 million monthly active users worldwide, a milestone on the road to WhatsApp becoming the communication network of the 21st century," a company spokesperson told CNET.
"On this occasion, we are also excited to introduce Voice Messaging, a new feature that … Read more