CRED rewards users for paying bills through the app. But what is the business model of CRED and how does CRED make money when it's a free app? CRED Business…

How do classified ads websites like Craigslist make money? Many show display ads, but Craigslist isn't following that practice. You don't see any ads, and you can even post your…

Everyone knows WhatsApp - The texting app that took the world by storm and replaced "SMS" forever! But being a free app with 1.6 billion users, how does Whatsapp make…