5 Largest Social Media Forums in the World

No. 3: WhatsApp

Research in Motion Ltd (BBRY)

Monthly active users: 350 million

Though a far cry from our leading social forums, WhatsApp is undoubtedly the most popular messaging network for smartphone users. The network, which allows users to send each other text, images, or audio recordings has become the favorite channel of communication for 350 million people per month.