Billion-dollar startup Letgo is becoming the go-to app for selling your stuff -- here's how it works

Letgo There are dozens of ways to sell your used stuff these days. But an app called Letgo wants to overtake services like Craigslist and Facebook to become the go-to destination for buying and selling used products. In the process, Letgo has become the startup world's newest unicorn — worth over $1 billion, having raised more than $375 million to date. Letgo was founded in 2015 and is available for iPhone and Android devices. The premise is simple: Snap a photo of something you'd like to sell...