Facebook Reject
He later hired Koum at Yahoo and served as his mentor, inviting him over to his house and taking him skiing, Forbes said. After exiting Yahoo, Acton said on Twitter that he was turned down for a job at Facebook in 2009.
The two founded WhatsApp later that year with the idea that smartphone users should be able to easily message each other without incurring fees from phone carriers. The service is free for a year, then costs 99 cents per year after that.
They eschewed marketing and didn’t employ a public relations person, relying on the word-of-mouth recommendations of its users instead. The service became popular with friends and family communicating in different countries, especially in Europe, because it circumvents the fees charged by phone carriers.
“While others sought attention, Jan and Brian shunned the spotlight, refusing even to hang a sign outside the WhatsApp offices in Mountain View,” Goetz said in his blog post. “As competitors promoted games and rushed to build platforms, Jan and Brian remained devoted to a clean, lightning fast communications service that works flawlessly.”
Koum’s aversion to advertising contrasts with Facebook’s efforts to make more money from people using its service on mobile devices. He said in a statement on the company’s website that WhatsApp will remain autonomous and operate independently.
“There would have been no partnership between our two companies if we had to compromise on the core principles that will always define our company, our vision and our product,” he said.