More than 1.3 billion people use Facebook Messenger every month. It's quickly becoming one of the social media giant's biggest revenue generators. Cheddar's Jon Steinberg chats with Facebook's VP of Messaging David Marcus at WPP Stream USA in Ojai, California. Marcus tells Cheddar about Messenger's potential when it comes to business to consumer communications, and why people prefer the app to other competing platforms. Marcus discusses why he left his job as president of PayPal to lead Facebook's Messenger team. He admits it was "definitely a bet," but says Mark Zuckerberg's compelling vision was enough to draw him in. Three years in, Marcus says it's been an "unbelievable ride." We also learn about why businesses are so eager to build compatibility with the Messenger platform. Marcus says people across all demographics prefer to use messaging when communicating with brands, adding 64% of users say they'd rather message a company than call them on the phone. He says businesses will go to where user traffic is, and with 1.3 billion monthly active users, the sky seems to be the limit at Facebook Messenger.